SU538027A1 - Method for reducing metal oxides in a rotary kiln - Google Patents
Method for reducing metal oxides in a rotary kilnInfo
- Publication number
- SU538027A1 SU538027A1 SU2097423A SU2097423A SU538027A1 SU 538027 A1 SU538027 A1 SU 538027A1 SU 2097423 A SU2097423 A SU 2097423A SU 2097423 A SU2097423 A SU 2097423A SU 538027 A1 SU538027 A1 SU 538027A1
- Authority
- SU
- USSR - Soviet Union
- Prior art keywords
- metal oxides
- rotary kiln
- reducing metal
- hydrocarbons
- methods
- Prior art date
Links
- 238000000034 method Methods 0.000 title description 8
- 229910044991 metal oxide Inorganic materials 0.000 title description 2
- 150000004706 metal oxides Chemical class 0.000 title description 2
- 229930195733 hydrocarbon Natural products 0.000 description 8
- 150000002430 hydrocarbons Chemical class 0.000 description 8
- 239000000463 material Substances 0.000 description 3
- 238000010926 purge Methods 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 239000007800 oxidant agent Substances 0.000 description 2
- 230000001590 oxidative effect Effects 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 238000000197 pyrolysis Methods 0.000 description 2
- 239000004215 Carbon black (E152) Substances 0.000 description 1
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 description 1
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- 229910052770 Uranium Inorganic materials 0.000 description 1
- 238000000071 blow moulding Methods 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000003638 chemical reducing agent Substances 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000009851 ferrous metallurgy Methods 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000009856 non-ferrous metallurgy Methods 0.000 description 1
- 238000013021 overheating Methods 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000004071 soot Substances 0.000 description 1
- JFALSRSLKYAFGM-UHFFFAOYSA-N uranium(0) Chemical compound [U] JFALSRSLKYAFGM-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Manufacture And Refinement Of Metals (AREA)
Description
1one
Изобретение относитс к области черной и цветной металлургии в частности к процессу магнетизирующего обжига железных руд во вращающихс трубчатых печах и может быть использовано на гор- нообогатительных комбинатах, а также дл обжига цементного клинкера.The invention relates to the field of ferrous and non-ferrous metallurgy, in particular, to the process of magnetizing roasting of iron ores in rotary tube furnaces and can be used at coal preparation plants, as well as for roasting cement clinker.
Известны способы восстановлени окислов металлов во врелхающейс печи 1.23По этим способам в печь подают ншдшш или газообразные углеводороды и окислительный кислородсодержащий газ в таком количестве, чтобы по крайней мере в од, ной из зон печи обр овалась восстанови-. тельна атмосфера,Methods are known for reducing metal oxides in a melting furnace. 1.23. According to these methods, oil or gaseous hydrocarbons and oxidizing oxygen-containing gas are fed into the furnace in such a quantity that at least one of the furnace zones is reduced. solid atmosphere
Недостатком способов вл етс слабый контакт между обрабатывае1 лым материало и углеводородным восстановителем, неполнота конверсии углеводородов, возможность местных перегревов н окислени уже восстановленного продукта в местах подвода окислител .The disadvantage of the methods is poor contact between the processed material and the hydrocarbon reducing agent, incomplete conversion of hydrocarbons, the possibility of local overheating and oxidation of the already reduced product at the sites of oxidant supply.
Это происходит потому, что утлеводо- роды и кислородсодержащий газ вдувают This is because the uranium hydrogen and oxygen-containing gas blows
в печь раздельно через автономные устройства .into the oven separately through autonomous devices.
Указанный недостаток- частично устранен в способе, согласно которому углеводороды подают непосредственно под слой восстанавливаемого материала, где они подвергаютс пиролизу, а затем над слоем их полностью или частично дожигают.This disadvantage is partially eliminated in the method according to which hydrocarbons are fed directly under the layer of the material to be regenerated, where they are subjected to pyrolysis, and then above or above the layer they are completely burned out.
Однако недостатком этого способа вл етс высокий эндотермический эффект реакции разложени углеводородов, что приводит к охлаждению очагов продувки и снижению производительности печи. Кроме того, объем подаваемых дл продувки углеводородов обычно недостаточен дл эффективной продувки материала.However, the disadvantage of this method is the high endothermic effect of the decomposition reaction of hydrocarbons, which leads to the cooling of the foci of purge and reduced productivity of the furnace. In addition, the volume of hydrocarbons supplied to purge is usually insufficient to effectively purge the material.
Углеводороды в смеси с воздухом подают в слой через неподвижную трубу с соплами, установпенцую внутри печи.Hydrocarbons mixed with air are fed into the bed through a fixed pipe with nozzles installed inside the oven.
Кроме того, недостатками известных способов вл ютс следующие. Гфодувка сло осуществл етс в режиме пиролиза углеводородов, коэффициент расхода окислител 0,25,что приводит к зна:читепы1ому сажевыделению, сопровождающемус большIn addition, the disadvantages of the known methods are the following. The blow molding of the layer is carried out in the mode of pyrolysis of hydrocarbons, the consumption coefficient of the oxidizing agent is 0.25, which leads to the sign of the cell to the soot release, accompanying
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU2097423A SU538027A1 (en) | 1975-01-16 | 1975-01-16 | Method for reducing metal oxides in a rotary kiln |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU2097423A SU538027A1 (en) | 1975-01-16 | 1975-01-16 | Method for reducing metal oxides in a rotary kiln |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| SU538027A1 true SU538027A1 (en) | 1976-12-05 |
Family
ID=20607673
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| SU2097423A SU538027A1 (en) | 1975-01-16 | 1975-01-16 | Method for reducing metal oxides in a rotary kiln |
Country Status (1)
| Country | Link |
|---|---|
| SU (1) | SU538027A1 (en) |
-
1975
- 1975-01-16 SU SU2097423A patent/SU538027A1/en active
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