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MXPA98005078A - Aglutinant, inorganic composition, yuss production of the mi - Google Patents

Aglutinant, inorganic composition, yuss production of the mi

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Publication number
MXPA98005078A
MXPA98005078A MXPA/A/1998/005078A MX9805078A MXPA98005078A MX PA98005078 A MXPA98005078 A MX PA98005078A MX 9805078 A MX9805078 A MX 9805078A MX PA98005078 A MXPA98005078 A MX PA98005078A
Authority
MX
Mexico
Prior art keywords
scale
molar ratio
binder composition
constituent
mixture
Prior art date
Application number
MXPA/A/1998/005078A
Other languages
Spanish (es)
Inventor
C Comrie Douglas
Original Assignee
Ib Technologies Llc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Ib Technologies Llc filed Critical Ib Technologies Llc
Publication of MXPA98005078A publication Critical patent/MXPA98005078A/en

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Abstract

An inorganic binder composition has a first constituent which is a poly (sialate) or a poly (sialato-siloxo) mixed with a second constituent having one or more of floating ash F. floating ash C. smoked silica Al2O3, porcelain, ground slag , nafelene syenite, aluminum anhydrous silicate, hydrated aluminum silicate, sodium silicate hydrate acid hydrate, potassium salt and sodium salt

Description

INORGANIC AGGLUTINANT COMPOSITION, PRODUCTION AND USES OF THE SAME FIELD OF THE INVENTION The invention relates to an inorganic binder composition and to the production of said binder composition and the uses of said binder composition. In particular, this invention relates to an inorganic binder composition which It is particularly useful for treating waste materials for careful and safe recycling and disposal BACKGROUND OF THE INVENTION Binder compositions have been proposed to solidify and dispose of hazardous waste In Davidovits patents Nos. 5,352,427, 5,349,118, 5,342,595, 4,859,367, 4,349,386, 4,472,199, 4,509,985, 4,522,652, 4,533,393, 4,608,795, 4,640,715, 4,642,137, a geopolymer comprising alumino-silicate oxide is described. These geopolymers were developed for inclusion in mampostepa slabs but found to be useful for solidifying waste for long-term disposal. The aluminum-silicate binders are comprised of two components, a fine dry powder and a highly alkaline syrupy liquid. The powder is a soluble alkaline polysykate that can be activated by the alkaline liquid to form tetrahedra of S1O4 and AI04. The tetrahedrons are entangled by molecules of Oxygen shared to form inorganic polymer networks A moderately exothermic reaction in the alkali-activated mixture is accompanied by hardening and polycondensation. Inorganic binders are characterized by several distinct properties, including thermal stability, high surface uniformity, precise mobility and hard surfaces. As a result, inorganic binders are particularly useful in especially construction applications, such as saline or aqueous environments. In addition, it has been found that the inorganic binder compositions of the prior art provide long-term solutions for hazardous and harmful waste. Various organic and inorganic wastes can be mixed with the inorganic compounds by displacing the total volume of aggregates to form a monolithic solid. As the structure of the crystal grows and solidifies the solution, the waste components are joined in a lattice, making the waste chemically inert, suitable for controlled landfill, recycling in construction means or reintroduction in a production process. The most significant properties of a waste treated with an inorganic binder are the capacity to resist the chemical attack of acidic conditions and to transform the soft, disintegrated or similar waste into mud and hard, cohesive solids in a relatively short time. Unfortunately, the cost of the raw materials has prevented the prior art inorganic binder compositions from becoming commercially competitive with other existing technologies for long-term disposal or recycling of waste or even with conventional Portland cement. COMPENDIUM OF THE INVENTION The disadvantages of the prior art can be overcome by providing an inorganic binder composition that is cost effective for its manufacture and use. It is desirable to provide an inorganic binder composition that can be cured in a variety of environments, including saline, corrosive, acidic, toxic and radioactive. It is desirable to provide an inorganic binder composition that is useful for treating hazardous and harmful waste and rendering such waste inert for long-term disposal. According to one aspect of the invention, a first constituent of an inorganic binder composition is provided. The first constituent comprises approximately 20% sodium oxide; about 60% tri-calcium silicate; about 10% di-calcium silicate; about 6% tri-calcium aluminate; about 1% aluminum oxide; about 1% ferric oxide; about 1% magnesium oxide; and about 1% sulfur tri-oxide. According to another aspect of the invention, an inorganic binder composition comprising about 5-20% fumed silica is provided; between 40-60% aluminum anhydride silicate, between 1-10% silicic acid, between 1-10% potassium or sodium salt According to yet another aspect of the invention, an inorganic binder composition is provided which have as a first constituent a pol? (s? alato) or a pol? (s? alato-s? loxo) with one or more of floating ash F, floating ash C, smoked silica, Al203, porcelain, ground slag, neofelene syenite, silicate aluminum anhydride, hydrated aluminum silicate, hydrated sodium hydroxide, silicic acid, potassium salt, and sodium salt The mixture is a molar ratio of S? 02 to Al203 of between about 52 to about 143 According to another aspect of The invention provides an inorganic binder composition comprising a first constituent comprising sodium oxide, calcium silicate tp-calcium di-calcium silicate, calcium t-aluminate, aluminum oxide, ferric oxide, magnesium oxide, tp-oxide of sulfur, administered with a n second constituent selected from one or more of the following floating ash F, floating ash C, fumed silica, Al203 porcelain, ground slag, nephelene syenite, anhydrous aluminum silicate, hydrous aluminum silicate, sodium hydrous hydroxide, silicic acid, salt potassium, and sodium salt According to another aspect of the invention, there is provided a method of recycling waste materials from a foundry furnace comprising the steps of mixing reverted materials from a metal melting furnace with an inorganic binder composition and completing The mixture in a briquette for recycling in said furnace According to another aspect of the invention, a method is provided for recycling waste materials from a foundry furnace, including coke coke, oxidized layers of manufacture, and powder from the steams. method comprises the steps of mixing the reverted materials of a melting furnace with 13 5% approximately 17 5% by weight of an organic binder composition, and compacting the mixture in a briquette for recycling in said furnace. DESCRIPTION OF THE INVENTION First Modality The invention relates to a binder composition as a replacement for, or additive for, cement The organic binder composition of The first embodiment of the present invention includes a first constituent comprising by weight 20% sodium oxide, 60% calcium silicate, 10% di-calcium silicate, 6% calcium aluminate, 1 % aluminum oxide, 1% ferric oxide 1% magnesium oxide 1% tp-sulfur oxide The first constituent is a pol? (s? alato) or a pol? (s? alato-siloxo) However , the composition of the first constituent of the present invention has molar ratios of components that differ from the? ol? (s? alato) or a pol? (s? alato-s? loxo) of the prior art EXAMPLE 1 Between 62 and 90% by weight of the first constituent of the first embodiment of the binder composition can be mixed with 5-20% floating ash F, 4-10% smoked silica, 1-8% Al203 The resulting composition has a molar ratio of SI02 to Al203 on the scale of about 52 to about 76 La The composition of this example is useful as a building material, either in partial replacement for, or in conjunction with, Portland cement Floating ash F in combination with fumed silica acts as a Portland cement type material when combined with Al203 EXAMPLE 2 Between 60 and 90% by weight of the first constituent of the first embodiment of the binder composition can be mixed with 4-10% of porcelain, 4-10% of (calcium oxide), 5-10% of aluminum silicate anhydride , 1-5% silicic acid, 1-5% potassium salt The resulting composition has a molar ratio of S? O2 to Al203 on the scale of about 5.2 to about 8 9, from M 0 to S? O2 on the scale of about 007 to about 0 11, from H2O to M20 on the scale of about 50 to about 100 and from M20 to AI2O3 on a scale of about 0 30 to about 045, wherein M20 is selected from the group comprising Na20 K20 and a mixture of Na20 and K20 The composition of this example is particularly useful for hazardous waste applications The anhydrous aluminum silicate provides the building block for the zeolite structure when combined with silicic acid and potassium salt The additional crystalline structure is provided by the calcium silicate The union effectively encapsulates the molecules of the hazardous materials EXAMPLE 3 Between 60 and 90% by weight of the first constituent of the first embodiment of the binder composition can be mixed with 4-10% porcelain, 4-10% ground slag (calcium oxide), 5-10% anhydrous aluminum silicate, 1-5% silicic acid, 1-5% sodium salt The resulting composition has a mol ratio from S02 to AI2O3 on the scale from about 5.2 to about 8.9, from M2O to SiO2 on the scale from about 0 07 to about 0.11, from H2O to M20 on the scale from about 5.0 to about 10.0 of M2O a AI2O3 in the range from about 0.30 to about 0 45. The composition of this example is also useful for hazardous waste applications. EXAMPLE 4 Between 60 and 90% by weight of the first constituent of the first embodiment of the binder composition can be mix with. 5-20% floating ash C, 4-10% porcelain, 1-5% silicic acid, 1-5% potassium or sodium salt, preferably potassium. The resulting composition has a molar ratio of S? 02 to Al203 on the scale from about 7.4 to about 14.3, from M20 to Si02 on the scale from about 0 05 to about 0.10, from H20 to M20 on the scale of about 5 0 to about 9 0 and from M20 to Al203 on the scale of about 0.25 to about 0 45 The composition of this example is useful as a building material, either in substitution by or in conjunction with Portland cement. The composition of this example is relatively more expensive than the previous examples C floating ashes are currently more expensive than floating ashes F, however, floating ash C has better quality Porcelain replaces anhydrous aluminum silicate as a source of Al203 EXAMPLE 5 Between 40 and 60% by weight of the first form of the binder composition can be mixed with 4-10% porcelain, 4-10% nefelene syenite, 1-5% aluminum silicate hydrate or 1-5% hydrous sodium hydroxide 1-5% silicic acid, 1-5% potassium or sodium salt, either separately or in combination The resulting composition has a molar ratio of S? 02 to Al203 on the scale from about 52 to about 90, from M20 to S1O2 on the scale of about 050 to about 200, from H20 to M20 on the scale of about 50 to about 9 0 and from M20 to Al203 on the scale of about 1 75 to about 3 50 In this example the nefelene and hydrous aluminum silicate sienite can be replaced by anhydrous aluminum silicate from 5 to 10% However, nefelene syenite and hydrous aluminum silicate are preferred since it is a waste material and therefore it is relatively inexpensive. The binder composition of this example is particularly useful in the steel industry. Industrial waste, such as coke cork, oxidized layers of manufactured manmade dust and other reverted materials, can bpquetear to be reused in the steelmaking process The reclamation of reverted materials reduces the need for controlled landfill of industrial wastes, as well as covering valuable iron units In the past, the reverted material has been mixed with binders such as lime starch, tar, cement, molasses The agglomerated material is then bound for recycling However, the incineration of the organic binders generates toxins such as phenols (carboxylic acid) The Protection Department Environmental in the United States has recently banned the use of organic binders for use in reverse recycling materials The binder composition of this example is mixed with the waste material The content of the binder composition of the binder waste material should be about 135% to about 175%, when cold binder material is fed. If the binder material is heated, less binder can be used to achieve satisfactory results. If the binder content is greater than 14%, the binder-waste material should be dried before to compress in a briquette. The waste material may comprise by weight up to about 55% coke cisco and kiln slurry, about 10% humera powder and about 20% recycled oxidized manufacturing layers. The binder-waste material is then compressed in a briquette using conventional briquetting machine. The briquette is compressed at a pressure of between 12.40 MPa and 1792 MPa, preferably between 14.47 MPa and 17 92 MPa, using a noise speed of between 4-6. RPM The briquette is then reintroduced into the furnace for incineration. Using iron ore pellets of virgin materials in a blow-molding furnace, the recovery of the iron content is about 85%. Using the prior art blowing techniques, the recovery is about 40%. Using the briquettes of the present invention, the recovery of iron can be as high as 78%. It can be easily understood that the process described in the present invention can also be applied to other processing and metals of base, including lead, nickel and zinc smelting Second Modality The binder composition of a second embodiment includes the composition by weight of 5-20% fumed silica, 40-60% anhydrous aluminum silicate, 1-10% silicic acid, 1-10% potassium or sodium salt, or combinations thereof. uses potassium salt, the resulting composition has a molar ratio of S? 02 to Al203 on the scale from about 024 to about 22, from M20 to S? 02 on the scale from about 04 to about 0 10, from H20 to M20 on the scale of about 50 to about 125 and M20 to Al203 on the scale of about 0 12 to about 0 30 When sodium salt is used, the resulting composition has a molar ratio of S? 02 to Al203 in the scale from about 25 to about 34, from M20 to S? 02 on the scale of about 004 to about 0 15 from H20 to M20 on the scale of about 50 to about 9 0 and from M20 to Al203 on the scale of about 0 10 to about 040 Third Modality The binder composition of a tertiary The modality includes a weight composition of 10-20% fumed silica, 40-50% anhydrous aluminum silicate, and equal parts of 15-25% silicon acid and 15-25% potassium or sodium salt or combinations thereof. The composition of this modality is particularly useful in the steel industry. It is easily understood that each of the examples described herein has applications in recycling, construction and disposal of hazardous waste. However, it has been found that each has particular applications as a result of the costs and / or the specific characteristics that are required. In general, the inorganic binder of the present invention does not shrink when fixed, has high early strength, high surface hardness (<6 on a moh scale) and high compression strength compared to Portland cement and still other inorganic binder compositions It is now evident to a person skilled in the art that numerous combinations of binders can be manufactured using the present invention. However, since many other modifications and purposes of this invention become readily apparent to those skilled in the art, upon reading the present disclosure it should be understood that various changes in style, amounts and components may be effective within the scope of the claims. annexes.

Claims (1)

  1. CLAIMS 1 An inorganic binder composition comprising a first constituent comprising sodium oxide tp-calcium silicate, di-calcium silicate, tp-calcium aluminate, aluminum oxide, ferric oxide, magnesium oxide and sulfur trioxide, mixed with a second constituent comprising one or more than one group comprising floating ash F, floating ash C, smoked silica, Al203, porcelain, ground slag, nefelene syenite, anhydrous aluminum silicate, hydrous aluminum silicate, sodium hydroxide hydrate, silicic acid, potassium salt and sodium salt, wherein the mixture has a molar ratio of S? 02 to Al203 of between about 52 to about 143 2 An inorganic binder composition according to claim 1, wherein the composition comprises between 40 and 90% by weight of the first constituent 3 An inorganic binder composition according to claim 2, wherein the molar ratio of S? 02 to Al2 03 is on the scale of about 5 3 to about 76 4 An inorganic composition according to claim 3, wherein the mixture is, by weight of about 62 and 90% of the first constituent mixed with a second constituent comprising -20% floating ash F, 4-10% smoked silica and 1-8% Al203 An inorganic composition according to claim 1 wherein the mixture is by weight of about 60 and 90% of the first mixed constituent with a second constituent comprising: 4-10% porcelain, 4-10% ground slag, 5-10% anhydrous aluminum silicate, 1-5% silicic acid and 1-5% potassium salt. 6. An inorganic binder composition according to claim 5, wherein said composition has a molar ratio of SiO2 to AI2O3 on the scale from about 5.2 to about 8.9, a molar ratio of M20 to S? O2 on the scale of about 0.07. at about 0.11, a molar ratio of H20 to M20 on the scale of about 5.0 to about 10.0 and a molar ratio of M20 to Al203 on the scale of about 0.30 to about 0.45, wherein M20 is selected from the group comprising of Na20, K20 and a mixture of Na20 and K20. 7. An inorganic binder composition according to claim 1, wherein said mixture is, by weight, about 60 and 90% of the first constituent mixed with a second constituent comprising: 5-20% of floating ash C, 4 -10% porcelain, 1-5% silicic acid, 1-5% potassium or sodium salt. 8. An inorganic binder composition according to claim 7, wherein the inorganic binder composition has a molar ratio of S02 to Al203 on the scale of about 7.4 to about 14.3, from M20 to SiO2 on the scale of about 0.05 at about 0.10, from H20 to M20 on the scale of about 50 to about 90 and from M20 to AI2O3 on the scale from about 025 to about 045, wherein M2O is selected from the group comprising Na2O, K2O and a mixture of Na2O and K2O 9 An inorganic binder composition according to claim 1, wherein said mixture is, by weight, about 40 and 60% of the first constituent mixed with a second constituent comprising 4-10% porcelain 1-5% hydrous aluminum silicate, 1-5% hydrous sodium hydroxide, 1-5% silicic acid, 1-5% potassium salt and sodium 10 An inorganic binder composition according to claim 9, wherein said mixture has a molar ratio of S? 02 to Al203 on the scale of about 5 12 to about 90, from M20 to S? 02 on the scale of 0 50 to about 2 00, from H20 to M20 on the scale of about 50 to about 9 0 and from M20 to Al20 on the scale of about 1.75 to about 350, wherein M20 is selected from the group consisting of Na20, K20 and a mixture of Na20 and K20. 11 A first constituent of a binder composition Inorganic comprising 20% sodium oxide 60% tp-calcium silicate, 10% di-calcium silicate, 6% tp-calcium aluminate, 1% aluminum oxide, 1% ferric oxide 1% magnesium oxide and 1% tp-sulfur oxide 12 An inorganic binder composition it comprises silica fumed silica aluminum silicate anhydride anhydride, mixed with a selected component of potassium salt and sodium salt. 13. An inorganic binder composition according to claim 12, wherein said component is a potassium salt and the component has a molar ratio of Si02 to AI2O3 on the scale from about 0.24 to about 2.2, a molar ratio of M20 to SiO2. on the scale of about 0.04 to about 0.10, a molar ratio of H20 to M20 on the scale of about 5.0 to about 12.5 and a molar ratio of M 0 to Al 203 on the scale of about 0.12 to about 0.30, where M20 is selected from the group consisting of: Na20, K20 and the mixture of Na20 and K20. 14. An inorganic binder composition according to claim 12, wherein said component is sodium salt and the component has a molar ratio of Si02 to Al203 on the scale from about 2.5 to about 3.4, a molar ratio of M20 to SiO2. on the scale of about 0.04 to about 0.15, a molar ratio of H20 to M20 on the scale of about 5.0 to about 9.0 and a molar ratio of M20 to Al203 on the scale of about 0.10 to about 0.40, wherein M20 it is selected from the group consisting of: Na20, K20 and the mixture of Na20 and K20. 15. An inorganic binder composition according to claim 12, wherein said composition comprises by weight: 10-20% fumed silica; 40-50% anhydrous aluminum silicate; and equal parts of (a) 15-25% of silicic acid and (b) 15-25% of potassium salt and sodium salt and combinations thereof A method for recovering foundry furnace waste materials comprising the steps of mixing coated material with the inorganic binder composition defined in claim 1, and compacting the mixture into a briquette, for recycling it into said oven 17 A method according to claim 16, wherein the reverted material comprises coke coke, Oxidized manufacturing layers, wetting powder 18 A method according to claim 17, wherein the mixture comprises about 13 5% to about 17 5% by weight of the inorganic binder composition. A method according to claim 18, wherein the waste material comprises by weight up to about 55% coke cisco, about 10% humeral powder and about 20% oxidized layers of manufacture. A method according to claim 19, wherein said mixture contains more than 14% by weight of the inorganic binder and the method includes the step of drying the inorganic binder. A method according to claim 16, wherein the inorganic binder composition comprises between 40 and 90% by weight of the first constituent 22. A method according to claim 21, wherein the molar ratio of S? O2 to Al203 is in the range of about 5.2 to about 7.6 23. A method according to claim 22, wherein the organic binder composition has , by weight, of about 62 and 90% of the first constituent mixed with the second constituent comprising: 5-20% floating ash F, 4-10% fumed silica and 1-8% Al203, 24. One method of agreement with claim 16, wherein the organic binder composition has, by weight, about 60 and 90% of the first constituent mixed with a second constituent comprising: 4-10% porcelain, 4-10 ground slag, 5-10% of anhydrous aluminum silicate, 1-5% silicic acid, and 1-5% potassium salt. 25. A method according to claim 23, wherein the organic binder composition has a molar ratio of Si02 to Al203 on the scale of about 4.2 to about 8.9. a molar ratio of M20 to Si02 on the scale of about 0.07 to about 0.11, a molar ratio of H20 to M20 on the scale of about 5.0 to about 10.0 and a molar ratio M20 to Al203 on the scale of about 0.30 about 0.45, wherein M20 is selected from the group comprising Na20, K20 and a mixture of Na20 and K20, wherein M20 is selected from the group comprising Na20, K20 and the mixture of Na20 and K20. 26. A method according to claim 16, wherein said organic binder composition has, by weight, about 60 and 90% of the first constituent mixed with a second constituent comprising: 5-20% floating ash C, 4-10% porcelain, 1-5% silicic acid, 1-5% potassium or sodium salt. 27. A method according to claim 26, wherein the inorganic binder composition has a molar ratio of Si02 to AI2O3 on the scale from about 7.4 to about 14.3, from M20 to S02 on the scale of about 0.05 to about from 0.10, from H20 to M20 on the scale from about 50 to about 9.0 and from M20 to Al203 on the scale from about 0.25 to about 0.45, wherein M20 is selected from the group comprising Na20, K20 and a mixture of Na20 and K20 28. A method according to claim 16, wherein the inorganic binder composition has, by weight, about 40 and 90% of the first constituent mixed with a second constituent comprising: 4-10% porcelain 4- 10%, 4-10% nefelene syenite, 1-5% hydrated aluminum silicate, 1-5% hydrated sodium hydroxide, 1-5 silicic acid. 15% sodium or potassium salt. 29 A method according to claim 28, wherein the inorganic binder composition has a molar ratio of S? 02 to Al203 on the scale of about 52 to about 90. of M20 to S? 02 on the scale of about 0 50 to about 2 00, of H 2 O at M2O on the scale of about 50 to about 90 and M2O to Al203 on the scale of about 2 75 to about 350, wherein M20 is selected from the group comprising Na20, K20 and a mixture of Na20 and K20 30 A The method according to claim 16, wherein the inorganic binder composition comprises about 20% sodium oxide, about 60% tp-calcium silicate, about 10% di-calcium silicate, about 6% tp- aluminate. calcium, about 1% aluminum oxide, about 1% ferric oxide, about 1% magnesium oxide, and about 1% tp-sulfur oxide 31 A method according to claim 16, wherein the inorganic binder composition ica comprises fumed silica, anhydrous aluminum silicate, silicic acid, mixed with a selected component of potassium salt and sodium salt. A method according to claim 31, wherein the component is potassium salt and the mixture has a molar from S? 02 to Al203 on the scale of about 024 to about 22, a molar ratio of M20 to S? 02 on the scale of about 004 to about 0 10, a molar ratio of H20 to M20 on the scale of about 5 0 to about 12 5 and a molar ratio of M20 to Al203 on the scale from about 0 12 to about 030 where M20 is selected from the group comprising Na20, K20 and a mixture of Na20 and K20 33 A method according to claim 31, wherein the component is sodium salt and the mixture has a molar ratio of S? O2 to Al203 on the scale from about 2 5 to about 34, a molar ratio of M 2 O to S? O 2 in the scale of approximately 004 to alred erator of 0 15, a molar ratio of H20 to M20 on the scale of about 50 to about 9 0 and a molar ratio of M20 to Al203 on the scale of about 0 10 to about 04 where M20 is selected from the group that comprises Na20, K20 and a mixture of Na20 and K20. A method according to claim 16, wherein the inorganic binder composition comprises by weight 10-20% fumed silica, 40-50% anhydrous aluminum silicate, and equal parts of 15-25% silicic acid, and 15-25% of potassium salt and sodium salt A method according to claim 16, wherein the compaction is between 1447 MPa and 17 92 MPa
MXPA/A/1998/005078A 1995-12-22 1998-06-22 Aglutinant, inorganic composition, yuss production of the mi MXPA98005078A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US08578874 1995-12-22

Publications (1)

Publication Number Publication Date
MXPA98005078A true MXPA98005078A (en) 1999-07-06

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