Method for sorting and separating ore from aluminum silicon mineral

A mineral, aluminum-silicon technology, applied in the direction of solid separation, flotation, etc., can solve the problems of large chemical consumption per unit of selected ore, difficult tailings settlement, and low classification efficiency, so as to facilitate settlement and product dehydration, fine ore concentrate Particle size reduction, the effect of saving grinding energy consumption

Inactive Publication Date: 2008-05-14
GUIZHOU BRANCH CHINA ALUMINUM IND
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Among them, the graded coarse particles after raw ore grinding are directly used as concentrates, and the fine particles enter the flotation process. The separation of minerals results in low slurry concentration of fine-grained minerals participating in the flotation operation, which leads to large chemical consumption per unit of ore selected, sticky foam, hard to break, and poor fluidity of foam; In the process, bauxite needs to be finely ground, high energy consumption, small mill capacity, and the difference in surface properties between coarse and fine grains, resulting in severe sinking of coarse grains, high tailings grade, low recovery rate, and difficult pro

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  • Method for sorting and separating ore from aluminum silicon mineral

Examples

Experimental program
Comparison scheme
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Example Embodiment

[0021] Example 1

[0022] Taking Shanxi Jinnan low-grade bauxite as the test sample, its chemical composition is shown in Table 1, and the mineral composition is shown in Table 2.

[0023] Table 1 Chemical composition of low-grade bauxite in Jinnan, Shanxi

[0024] Chemical composition

[0025] Table 2 Mineral facies composition of low-grade bauxite in Shanxi Jinnan

[0026] Physical phase

[0027] Process equipment: the first stage grinding adopts a lattice ball mill, the roughing equipment is a micro-bubble flotation machine, the second stage grinding adopts an overflow type grinding machine, and the grading equipment is a hydrocyclone.

[0028] Process flow: see the process flow chart (figure 1), using two selection and two sweep selection processes.

[0029] Process parameters: the first stage grinding fineness is 40.7%, the second stage grinding fineness is 65.5%, the graded fine-grain grade -0.074mm content is 98%, and the reagent system is a conventional...

Example Embodiment

[0038] Example 2

[0039] Taking Shanxi Jinnan low-grade bauxite as the test ore samples, the properties of the ore samples are shown in Table 1 and Table 2.

[0040] Process equipment: the first stage grinding adopts a lattice ball mill, the roughing equipment is an inflatable mechanical stirring flotation machine, the second stage grinding adopts an overflow type grinding machine, and the high-efficiency classification equipment is a hydrocyclone.

[0041] Process flow: see the process flow chart (figure 1), using two selection and two sweep selection processes.

[0042] Process parameters: the first stage grinding fineness is 77.23%, the second stage grinding fineness is 88.69%, the high-grade fine-grain grade -0.074mm content is 90.0%, and the reagent system is a conventional positive flotation reagent system.

[0043] Process index: see Table 5.

[0044] Table 5 Example 2 Flotation Index

[0045] Products

[0046] It can be seen from Table 5 that some process parame...

Example Embodiment

[0051] Example 3

[0052] Taking Shanxi Jinnan low-grade bauxite as the test ore samples, the properties of the ore samples are shown in Table 1 and Table 2.

[0053]Process equipment: the first stage grinding adopts a lattice ball mill, the roughing equipment is a flotation column, the second stage grinding adopts an overflow type grinding machine, and the grading equipment is a vibrating screen.

[0054] Process flow: see the process flow chart (figure 1), using two selection and two sweep selection processes.

[0055] Process parameters: the first stage grinding fineness is 62.4%, the second stage grinding fineness is 71.2 3%, the grading fine particle grade -0.074mm content is 95%, and the reagent system is a conventional positive flotation reagent system.

[0056] Process index: see table 7.

[0057] Table 7 Example 3 Flotation Index

[0058] Products

[0059] The concentrate was sieved, and the results of the sieving analysis are shown in Table 8.

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Abstract

The invention relates to a mill run separation method for the aluminium silicon mineral, in particular to a diasporite type alumyte floatation desiliconizing method. The invention is characterized in that: after grinding the original aluminium silicon mineral, directly carrying through a rougher flotation, the surfaced foam is looked upon as the ore concentrate product or enters the chosen; grading the rougher flotation underset, the coarse fraction enters the second stage milling grinding, the milling grinding products returns to the rougher flotation; the fine fraction enters the scavenging operation; the sequence of choosing underset, scavenging foam returns to the operation before. The invention has the advantages of solving the problem of the reasonable grade distribution of the milling grinding and the mill run slurry, greatly reducing the ore concentrate minuteness grade, increasing the coarse fraction, and solving the problem of high moisture level in the filter products.

Description

technical field [0001] A method for beneficiation and separation of aluminum-silicon minerals relates to a method for flotation desiliconization of diaspore type bauxite. technical background [0002] With the rapid development of my country's aluminum industry, the dwindling of high-quality bauxite resources will seriously affect the sustainable development of my country's alumina industry. Applying economical and reasonable beneficiation methods to improve the grade of bauxite and remove harmful aluminosilicate impurities in diaspore bauxite is an effective way to solve this problem. At present, the positive flotation desilication technology and process of bauxite are relatively mature, and the key technology is reflected in the treatment method of coarse and fine particle size of bauxite after grinding. Among them, the graded coarse particles after raw ore grinding are directly used as concentrates, and the fine particles enter the flotation process. The separation of m...

Claims

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Application Information

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IPC IPC(8): B03D1/02B03B1/00
Inventor 李旺兴陈湘清陈兴华
Owner GUIZHOU BRANCH CHINA ALUMINUM IND
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