CN1298870C - Treatment method of magnesite - Google Patents
Treatment method of magnesite Download PDFInfo
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- CN1298870C CN1298870C CNB2005100464685A CN200510046468A CN1298870C CN 1298870 C CN1298870 C CN 1298870C CN B2005100464685 A CNB2005100464685 A CN B2005100464685A CN 200510046468 A CN200510046468 A CN 200510046468A CN 1298870 C CN1298870 C CN 1298870C
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Abstract
一种菱镁矿石的处理方法，选取氧化镁含量在43.5%以上的菱镁原矿石，将其粉碎到粒度直径在2—10cm，在10—30℃温度下，经盐酸浸泡并搅拌20—120分钟，至发泡停止后再用水清洗，晾干，用振动筛进行筛选，将筛选后振动筛上的矿石在800—3000℃煅烧，经冷却后即为成品。本发明能有效地去除部分杂质，降低杂质含量，同时提高了氧化镁含量，因此能够满足高级耐火材料的要求，使其应用范围更广，另外提高对菱镁原矿石的利用率。A processing method for magnesite ore, selecting raw magnesite ore with magnesium oxide content above 43.5%, crushing it to a particle size diameter of 2-10cm, soaking in hydrochloric acid at a temperature of 10-30°C and stirring for 20-120 Minutes, until the foaming stops, wash with water, dry, and screen with a vibrating sieve. After screening, the ore on the vibrating screen is calcined at 800-3000 ° C, and it is the finished product after cooling. The invention can effectively remove some impurities, reduce the content of impurities, and increase the content of magnesium oxide at the same time, so it can meet the requirements of high-grade refractory materials, make the application range wider, and improve the utilization rate of raw magnesite ore.
Description
技术领域：本发明涉及一种菱镁矿石的处理方法。Technical field: the present invention relates to a processing method of magnesite ore.
背景技术：目前，应用于高级耐火材料中的菱镁矿石，它的处理方法是选取氧化镁含量达到46.5％以上(菱镁原矿石氧化镁含量一般不高于47.7％)的菱镁原矿石，直接投入电熔炉内或轻烧窑煅烧，经冷却后产出成品；产出的成品分为四个等级：氧化镁含量在98％的占总量的15％左右，氧化镁含量在97％的占总量的60％左右，氧化镁含量在96％的占总量的25％左右，还有氧化镁含量在92％的占成品总量的30％左右；因此成品氧化镁含量低，且杂质含量高；不能满足目前高级耐火材料的要求，使得应用范围受到限制；另外对选取的原矿石(要求氧化镁含量达到46.5％以上)严格，使得一些低于这个标准的大量原矿石无法利用，而形成废矿石，因此对菱镁原矿石的利用率低。Background technology: at present, the processing method of the magnesite ore used in high-grade refractory materials is to select the magnesite raw ore whose magnesium oxide content reaches more than 46.5% (magnesite raw ore magnesium oxide content is generally not higher than 47.7%), Put directly into the electric melting furnace or light-fired kiln for calcination, and produce finished products after cooling; the finished products are divided into four grades: those with a magnesium oxide content of 98% account for about 15% of the total, and those with a magnesium oxide content of 97% Accounting for about 60% of the total, magnesium oxide content of 96% accounts for about 25% of the total, and magnesium oxide content of 92% accounts for about 30% of the total finished product; therefore, the finished magnesium oxide content is low, and the impurities High content; cannot meet the requirements of the current advanced refractory materials, so that the scope of application is limited; in addition, the selection of raw ore (requires the content of magnesium oxide to reach more than 46.5%) is strict, so that some raw ore below this standard cannot be used. Waste ore is formed, so the utilization rate of magnesite raw ore is low.
发明内容：为了解决上述存在问题，本发明提供一种对菱镁矿石的一种新的处理方法，它能有效地去除杂质，降低杂质含量，同时提高了氧化镁含量。Summary of the invention: In order to solve the above problems, the present invention provides a new treatment method for magnesite ore, which can effectively remove impurities, reduce the content of impurities, and increase the content of magnesium oxide at the same time.
具体技术方案如下：一种菱镁矿石的处理方法，选取氧化镁含量在43.5％以上的菱镁原矿石，将其粉碎到粒度直径在2-10cm，在10-30℃温度下，经盐酸浸泡发泡并搅拌20-120分钟，至发泡停止再用水清洗，晾干，用振动筛进行筛选，将筛选后振动筛上的矿石在800-3000℃煅烧，经冷却后即为成品。The specific technical scheme is as follows: a processing method for magnesite ore, select magnesite raw ore with a magnesium oxide content of more than 43.5%, crush it to a particle size diameter of 2-10cm, and soak it in hydrochloric acid at a temperature of 10-30°C Foaming and stirring for 20-120 minutes, until the foaming stops, wash with water, dry, and screen with a vibrating sieve. After screening, the ore on the vibrating screen is calcined at 800-3000 ° C, and the finished product is obtained after cooling.
同现有技术相比，本发明对菱镁原矿石先进行处理后再煅烧，由于可选取氧化镁含量在43.5％以上的菱镁原矿石，对原矿石的利用率提高了；加入盐酸去除菱镁原矿石中的部分氧化钙、三氧化二铁，同时可使存在于菱镁原矿石层中的二氧化硅、三氧化二铝脱落，然后用振动筛将其筛选掉；经本发明处理后的成品，氧化镁含量在98％的占总量的70％左右，氧化镁含量在97％的占总量的20％左右，氧化镁含量在96％的占总量的10％左右；因此能够满足高级耐火材料的要求，使其应用范围更广。下面通过已有电熔炉、轻烧窑煅烧的处理方法(表1-表5、表10)和本发明的处理方法(表6-表9、表11)所测试氧化镁、杂质含量对比表进行比较：Compared with the prior art, the present invention processes the magnesite raw ore first and then calcines it. Since the magnesite raw ore with a magnesium oxide content of more than 43.5% can be selected, the utilization rate of the raw ore is improved; hydrochloric acid is added to remove the magnesite Part of the calcium oxide and ferric oxide in the raw magnesia ore can simultaneously cause the silicon dioxide and aluminum oxide in the raw magnesite layer to fall off, and then be screened out with a vibrating screen; after being treated by the present invention The finished products with a magnesium oxide content of 98% account for about 70% of the total, those with a magnesium oxide content of 97% account for about 20% of the total, and those with a magnesium oxide content of 96% account for about 10% of the total; therefore, it can Meet the requirements of advanced refractory materials, so that it can be used in a wider range. The processing method (table 1-table 5, table 10) and the processing method of the present invention (table 6-table 9, table 11) tested magnesium oxide, impurity content comparison table by existing electric melting furnace, light-fired kiln calcining are carried out below Compare:
表1：未经处理的菱镁原矿石
表2：将上述菱镁原矿石经电熔炉煅烧的处理方法所得成品：
表3：将上述菱镁原矿石经电熔炉煅烧的处理方法所得成品：
表4：将上述菱镁原矿石经电熔炉煅烧的处理方法所得成品：
表5：将上述菱镁原矿石经电熔炉煅烧的处理方法所得成品：
以上表2中氧化镁含量97.80％的成品占总量的15％，表3中氧化镁含量96.97％的成品占总量的60％，表4中氧化镁含量95.7％的成品占总量的25％，表5中氧化镁含量92.00％的皮砂为副产品。The finished product with 97.80% magnesium oxide content in the above table 2 accounts for 15% of the total amount, the finished product with 96.97% magnesium oxide content accounts for 60% of the total amount in table 3, and the finished product with 95.7% magnesium oxide content accounts for 25% of the total amount in table 4. %, the leather sand with magnesia content of 92.00% in Table 5 is a by-product.
表6：经本发明方法煅烧前处理的矿石(选取氧化镁含量达到46.8％的菱镁原矿石进行处理)
表7：将上述处理后的矿石经电熔炉煅烧后所得成品
表8：将上述处理后的矿石经电熔炉煅烧后所得成品
表9：将上述处理后的矿石经电熔炉煅烧后所得成品
以上表7中氧化镁含量98.10％的成品占总量的70％，表8中氧化镁含量97.30％的成品占总量的22％，表9中氧化镁含量96.52％的皮砂占总量的8％。The finished product with magnesium oxide content of 98.10% in the above table 7 accounts for 70% of the total amount, the finished product with magnesium oxide content of 97.30% in table 8 accounts for 22% of the total amount, and the leather sand with magnesium oxide content of 96.52% in table 9 accounts for 70% of the total amount. 8%.
表10：采用现有技术处理菱镁原矿石轻烧窑煅烧后的成品(选取氧化镁含量达到46.8％的菱镁原矿石进行处理)
表11：采用本发明处理的菱镁原矿石轻烧窑煅烧后的成品(选取氧化镁含量达到46.8％的菱镁原矿石进行处理)
当选取氧化镁含量在45.5％的菱镁原矿石，采用本发明的处理方法，所测试的氧化镁、杂质含量结果与选取氧化镁含量达到46.8％的菱镁原矿石采用现有技术处理方法的测试结果相同；综上所述，本发明不仅提高了氧化镁含量、降低杂质含量，同时，也使得以往废弃的菱镁原矿石得以利用。When selecting the magnesite raw ore with a magnesium oxide content of 45.5%, using the processing method of the present invention, the tested magnesium oxide and impurity content results are the same as the selected magnesite raw ore with a magnesium oxide content of 46.8% using the prior art processing method The test results are the same; in summary, the present invention not only increases the content of magnesium oxide and reduces the impurity content, but also enables the use of the previously discarded raw magnesite ore.
具体实施方式：Detailed ways:
实施例1：一种菱镁矿石的处理方法，选取氧化镁含量在45.5％的菱镁原矿石，将其粉碎到粒度直径在6cm，在20℃温度下，经盐酸(盐酸浓度为30％)浸泡发泡并搅拌40分钟，至发泡基本停止后再用水清洗，晾干，用振动筛筛选，将脱落的菱镁原矿石层中的二氧化硅、三氧化二铝、三氧化二铁、氧化钙筛选掉，振动筛上的矿石再在3000℃电熔炉内煅烧，冷却，即得成品。Embodiment 1: a kind of processing method of magnesite ore, choose the magnesite raw ore with magnesium oxide content at 45.5%, it is pulverized to particle size diameter at 6cm, at 20 ℃ of temperature, through hydrochloric acid (hydrochloric acid concentration is 30%) Soak and foam and stir for 40 minutes, wash with water until the foaming basically stops, dry, screen with a vibrating screen, and remove the silicon dioxide, aluminum oxide, ferric oxide, Calcium oxide is screened out, and the ore on the vibrating screen is then calcined in a 3000°C electric furnace and cooled to obtain the finished product.
实施例2：一种菱镁矿石的处理方法，选取氧化镁含量在46.8％的菱镁原矿石，将其粉碎到粒度直径在10cm，在25℃温度下，经盐酸(盐酸浓度为30％)浸泡并搅拌30分钟，至发泡基本停止后再用水清洗，晾干，用振动筛筛选，将脱落的菱镁原矿石层中的二氧化硅、三氧化二铝、三氧化二铁、氧化钙筛选掉，振动筛上的矿石再经800℃轻烧窑内煅烧，冷却，即得成品。Embodiment 2: a kind of processing method of magnesite ore, choose the magnesite raw ore with magnesium oxide content at 46.8%, it is pulverized to particle size diameter at 10cm, under 25 ℃ of temperature, through hydrochloric acid (hydrochloric acid concentration is 30%) Soak and stir for 30 minutes, wash with water until the foaming basically stops, dry in the air, screen with a vibrating screen, and remove the silicon dioxide, aluminum oxide, ferric oxide, and calcium oxide from the fallen magnesite raw ore layer Screened out, the ore on the vibrating screen is then calcined in a light firing kiln at 800°C, and cooled to obtain the finished product.
实施例3：一种菱镁矿石的处理方法，选取氧化镁含量在46.8％的菱镁原矿石，将其粉碎到粒度直径在2cm，在25℃温度下，经盐酸(盐酸浓度为30％)浸泡并搅拌20分钟，至发泡基本停止后再用水清洗，晾干，用振动筛筛选，将脱落的菱镁原矿石层中的二氧化硅、三氧化二铝、三氧化二铁、氧化钙筛选掉，振动筛上的矿石再经3000℃电熔炉内煅烧，冷却，即得成品。Embodiment 3: a kind of processing method of magnesite ore, choose the magnesite raw ore of magnesium oxide content at 46.8%, it is pulverized to particle size diameter at 2cm, at 25 ℃ of temperature, through hydrochloric acid (hydrochloric acid concentration is 30%) Soak and stir for 20 minutes, wash with water until the foaming basically stops, dry in the air, screen with a vibrating screen, and remove the silicon dioxide, aluminum oxide, ferric oxide, and calcium oxide from the fallen magnesite raw ore layer Screened out, the ore on the vibrating screen is then calcined in a 3000°C electric furnace and cooled to obtain the finished product.
实施例4：一种菱镁矿石的处理方法，选取氧化镁含量在43.5％的菱镁原矿石，将其粉碎到粒度直径在2cm，在25℃温度下，经盐酸(盐酸浓度为30％)浸泡并搅拌20分钟，至发泡基本停止后再用水清洗，晾干，用振动筛筛选，将脱落的菱镁原矿石层中的二氧化硅、三氧化二铝、三氧化二铁、氧化钙筛选掉，振动筛上的矿石再经3000℃电熔炉内煅烧，冷却，即得成品。Embodiment 4: a kind of processing method of magnesite ore, choose the magnesite raw ore with magnesium oxide content at 43.5%, it is pulverized to particle size diameter at 2cm, under 25 ℃ of temperature, through hydrochloric acid (hydrochloric acid concentration is 30%) Soak and stir for 20 minutes, wash with water until the foaming basically stops, dry in the air, screen with a vibrating screen, and remove the silicon dioxide, aluminum oxide, ferric oxide, and calcium oxide from the fallen magnesite raw ore layer Screened out, the ore on the vibrating screen is then calcined in a 3000°C electric furnace and cooled to obtain the finished product.
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| CN103131846A (en) * | 2011-11-23 | 2013-06-05 | 沈阳铝镁设计研究院有限公司 | Processing method of low grade magnesite |
| CN113182261A (en) * | 2021-05-19 | 2021-07-30 | 湖北高芯光电科技有限公司 | Novel technology for cleaning stone |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2107844A1 (en) * | 1970-02-20 | 1971-09-09 | Veitscher Magnesitwerke Ag | Process for the large-scale production of high-purity magnesium oxide |
| SU701965A1 (en) * | 1973-09-13 | 1979-12-05 | Восточный научно-исследовательский и проектный институт огнеупорной промышленности | Method of producing magnesium oxide for preparation of refractory materials |
| CN1015163B (en) * | 1987-07-15 | 1991-12-25 | 挪威海德罗公司 | Method for producing magnesium chloride |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2107844A1 (en) * | 1970-02-20 | 1971-09-09 | Veitscher Magnesitwerke Ag | Process for the large-scale production of high-purity magnesium oxide |
| SU701965A1 (en) * | 1973-09-13 | 1979-12-05 | Восточный научно-исследовательский и проектный институт огнеупорной промышленности | Method of producing magnesium oxide for preparation of refractory materials |
| CN1015163B (en) * | 1987-07-15 | 1991-12-25 | 挪威海德罗公司 | Method for producing magnesium chloride |
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