Comprehensive utilization method of ore with high contents of aluminum, silicon and iron

A technology of high silicon and high iron, which is applied in the field of clean and efficient comprehensive utilization of high-aluminum, high-silicon and high-iron minerals, can solve problems such as ineffective development, and achieve the effects of efficient utilization, energy, and efficient comprehensive utilization.

Active Publication Date: 2016-12-07
贵州鑫亚矿业有限公司 +1
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Problems solved by technology

For example, high-iron and high-silicon bauxite needs to be desiliconized before further extraction of alumina. Red mud also contains many valuable elements

Method used

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  • Comprehensive utilization method of ore with high contents of aluminum, silicon and iron

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Experimental program
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Effect test

Embodiment 1

[0022] Guizhou Qinglong anatase containing TiO 2 4.00%~6.00%, including Sc 2 o 3 60g / t~120g / t. TiO 2 It mainly exists in the form of independent mineral anatase, and no independent mineral of scandium is found in the ore. Scandium element mainly occurs in clay minerals such as kaolinite and sericite, and secondly occurs in limonite and anatase. Metal minerals in raw ore mainly include anatase, limonite, and a small amount of ilmenite, magnetite, galena, pyrite, etc.; gangue minerals mainly include kaolinite, followed by quartz, silk (white ) mica, chlorite, plagioclase, zircon, etc. Technological mineralogy research shows that titanium is mainly produced in the form of fine-grained anatase wrapped in silicate and quartz, with extremely fine particle size, and secondly occurs in limonite in the form of isomorphism, which belongs to Very difficult to select ore.

[0023] Such as figure 1 As shown, the ore is broken and ground to a fineness of -200 mesh ≥ 80%, and then tw...

Embodiment 2

[0028] A high-iron bauxite mine in Yunnan, the raw ore contains Al 2 o 3 42.13%, SiO 2 15.73%, TiO 2 3.89%, Fe 2 o 3 15.64%, Sc 2 o 3 110g / t. There are oxides, carbonates, silicates, and a small amount of sulfides in the ore. There are more than 10 kinds of minerals in four categories, of which oxides account for 66.75% and silicates account for 31.64%. Aluminum minerals are mainly diaspore, iron minerals are mainly limonite, goethite, specularite, ilmenite, etc., titanium minerals are ilmenite and anatase, etc., gangue minerals are mainly clay , kaolinite, chlorite, pyrophyllite, illite, muscovite, calcite and organic matter. Aluminum minerals are mostly in the form of plates, flakes, and semi-euhedral-other-shaped granular crystals, often mixed with limonite, kaolinite, anatase and other components to form oolites or mutually wrapped, contiguous, or brown Iron ore and goethite are impregnated with fine particles, with a particle size between 0.03 and 0.1mm. Ir...

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Abstract

The invention discloses a comprehensive utilization method of ore with high contents of aluminum, silicon and iron. By using a reinforced leaching technology for rising leaching temperature by increasing a sulfuric acid concentration, valuable element and aluminum are leached efficiently; the silicon in the ore is purified to form an amorphous silicon dioxide product; the aluminum is separated to form an aluminum ammonium sulfate product via a crystallization method by adding an ammonium source; the valuable elements such as scandium and titanium are extracted step by step by using a solvent extraction method; and waste acid is concentrated and returns for ore leaching, and is crystallized to form ferric sulfate and ferrous sulfate. According to the method, a matched pyrite acid making system is built, sulfuric acid is provided, waste hot steam is made full use as a heat source of various procedures, and ferric sulfate and ferrous sulfate generated in a concentration process of waste acid is returned to the acid making system to achieve comprehensive utilization of the iron; and the method can achieve high-efficiency comprehensive utilization, clean production and emission without tailings of mineral resources and energy sources.

Description

technical field [0001] The invention relates to the technical field of mineral processing, in particular to a method for clean and efficient comprehensive utilization of ores containing high aluminum, high silicon and high iron. Background technique [0002] my country's mineral resources have the characteristics of many lean ores, rich ores, few easy-to-beneficiation ores, many small and medium-sized mines, few large-scale mines, many communal and associated ores with complex components, and few single ores. Outdated smelting technology, poor environmental awareness and other reasons lead to single products in most mines, huge tailings stockpiles, many unused components in tailings, and serious damage to the ecological environment. Therefore, green environmental protection, energy saving, comprehensive and efficient utilization of minerals Resources are an inevitable choice for mining development in today's era. Although the comprehensive utilization of mineral resources i...

Claims

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Application Information

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IPC IPC(8): C22B3/08C22B21/00C22B59/00C22B34/12C01B33/18C01F7/76C01G49/14C01B17/88C01F17/00
CPCC01B17/88C01B33/18C01F7/765C01F17/206C01G49/14C01P2006/80C22B3/08C22B21/0015C22B34/1259C22B59/00
Inventor 高利坤洪志陈龙
Owner 贵州鑫亚矿业有限公司
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