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Regulator for direct flotation of diasporic bauxite and using method thereof

A bauxite and positive flotation technology, applied in flotation, solid separation and other directions, can solve the problems of consumption of large sodium hexametaphosphate, normal positive flotation effect, and decrease in recovery rate, so as to promote effective separation and eliminate inevitable The influence of ions, the effect of improving the ratio of aluminum to silicon

Inactive Publication Date: 2015-07-15
ZHENGZHOU MINERALS COMPOSITIVE UTILIZATION RES INST CHINESE GEOLOGICAL ACAD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But the main shortcoming of existing adjusting agent is: consumption is bigger, also has inhibitory effect to diaspore, especially under the condition of large dosage, tends to the suppression of diaspore stronger, thereby causes Al 2 o 3 The decline of the recovery rate; at the same time, regulators such as sodium hexametaphosphate have an effect on the unavoidable ions (Ca 2+ , Mg 2+ etc.) is accomplished through complexation, which often requires the consumption of a large amount of sodium hexametaphosphate, and the effect is average, resulting in a general effect of positive flotation

Method used

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  • Regulator for direct flotation of diasporic bauxite and using method thereof
  • Regulator for direct flotation of diasporic bauxite and using method thereof
  • Regulator for direct flotation of diasporic bauxite and using method thereof

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0015] A regulator for the positive flotation of diaspore type bauxite, it is a synthetic polycarboxylate, its main component is sodium polyacrylate with small molecular weight, its structural formula is:

[0016] n=6.

[0017] The composition of bauxite in Xiaoguan Mining Area, Henan Province is shown in Table 1.

[0018] Table 1 Chemical multi-element analysis of raw ore

[0019]

[0020] The positive flotation process system is: the particle size of the bauxite grinding product is -0.074mm, accounting for 80-90%, the pH value of the flotation system is 10, and sodium oleate is used as the collector, and the dosage is 700g / t , the amount of regulator is 70g / t, and the beneficiation process is a roughing open-circuit process. Compared with the conventional regulator sodium hexametaphosphate, the test results are shown in Table 2.

[0021] Table 2 Results of comparison test of regulators

[0022]

[0023] The test results show that using the present invention ...

example 2

[0025] A regulator for the positive flotation of diaspore type bauxite, it is a synthetic polycarboxylate, its main component is potassium polyacrylate with small molecular weight, its structural formula is:

[0026] n=4.

[0027] The composition of bauxite in Xiaoguan Mining Area, Henan Province is shown in Table 1.

[0028] The positive flotation process system is: the particle size of the bauxite grinding product is -0.074mm, accounting for 80-90%, the pH value of the flotation system is 11, and sodium oleate is used as the collector, and the dosage is 800g / t , the amount of regulator is 80g / t, and the beneficiation process is a roughing open-circuit process. Compared with the conventional regulator sodium hexametaphosphate, the test results are shown in Table 3.

[0029] Table 3 Results of comparison test of modifiers

[0030]

[0031] The test results show that using the present invention as the regulator in the bauxite positive flotation desiliconization proc...

example 3

[0033] A regulator for the positive flotation of diaspore type bauxite, it is a synthetic polycarboxylate, its main component is sodium polyacrylate with small molecular weight, its structural formula is:

[0034] n=3.

[0035] For the raw ore of the concentrator of Henan Branch, the effect of the regulator was investigated, and the Al in the raw ore 2 o 3 The content is 55.73%, SiO 2 The content is 18.81%, and the aluminum-silicon ratio of raw ore is 2.96. In the test, the particle size of the bauxite grinding product is -0.074mm, which accounts for 80-90%. The pH value of the flotation system is 9. Sodium oleate is used as the collector, and the dosage is 500g / t. It is 60g / t, and the beneficiation process is a roughing open-circuit process. Compared with the conventional regulator sodium hexametaphosphate, the test results are shown in Table 4.

[0036] Table 4 Results of comparison test of regulators

[0037]

[0038] The test results show that using the pre...

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Abstract

The invention discloses a regulator for direct flotation of diasporic bauxite and a using method thereof. The regulator is synthetic polycarboxylate, wherein a main component of the synthetic polycarboxylate is small-molecular-weight sodium polyacrylate (potassium polyacrylate). The using method of the regulator is that a bauxite grinding product with the alumina-silica ratio 3-5 and the particle size -0.074mm accounts for 80-90% when the direct flotation of the bauxite is performed, a potential of hydrogen (pH) value of a flotation system is controlled to be 9-11, the using amount of sodium oleate serving as collecting agent is 500-800g / t, and the using amount of the regulator is 60-80g / t. The regulator is applied to a bauxite direct-flotation desilicication process, the selective inhibition effect on silicon-contained ores can be enhanced, meanwhile the unavoidable ion (Ca2+, Mg2+ and the like) eliminating capacity is enhanced, and the bauxite direct flotation effect is improved.

Description

technical field [0001] The invention relates to the field of mineral processing, in particular to a regulator used for the positive flotation of diaspore type bauxite and its application method. Background technique [0002] Most of the bauxite resources in my country belong to diaspore type bauxite, among which the proportion of high-quality bauxite with aluminum-silicon ratio greater than 7 is very small, and more than 80% of the diaspore-type bauxite with aluminum-silicon ratio is less than 7, and the bauxite with an aluminum-silicon ratio of 3-5 accounts for the vast majority. This part of resources must be desiliconized, enriched and upgraded through mineral processing methods, so that the aluminum-silicon ratio is greater than 7, so as to meet the minimum requirements of the lime-Bayer process. Flotation is the main method of beneficiation and desiliconization, and positive flotation is undoubtedly the most successful bauxite flotation method at present. During the ba...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B03D1/018B03D103/04
Inventor 刘长淼赵恒勤吴东印吕子虎卫敏赵登魁冯安生郭珍旭
Owner ZHENGZHOU MINERALS COMPOSITIVE UTILIZATION RES INST CHINESE GEOLOGICAL ACAD
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