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A kind of adjusting agent for positive flotation of bauxite and its application method

A bauxite and regulator technology, applied in flotation, solid separation, etc., can solve the problems of decreased recovery rate of Al2O3, consumption of large sodium hexametaphosphate, general positive flotation effect, etc., to achieve enhanced selective inhibition, Promotes effective separation and eliminates the effects of unavoidable ions

Active Publication Date: 2018-05-08
ZHENGZHOU MINERALS COMPOSITIVE UTILIZATION RES INST CHINESE GEOLOGICAL ACAD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But the main shortcoming of these regulators is: consumption is bigger, also has inhibitory effect to diaspore, especially under the condition of large dosage, often to the inhibition of diaspore stronger, thereby causes the decline of Al2O3 recovery rate At the same time, the elimination of unavoidable ions in the pulp by sodium hexametaphosphate and other regulators is done through complexation, which often requires the consumption of a large amount of sodium hexametaphosphate, and the effect is also average, resulting in a general positive flotation effect

Method used

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  • A kind of adjusting agent for positive flotation of bauxite and its application method
  • A kind of adjusting agent for positive flotation of bauxite and its application method
  • A kind of adjusting agent for positive flotation of bauxite and its application method

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Effect test

example 1

[0019] A positive flotation regulator for bauxite, it is a modified phosphate, the main component is potassium hydroxyethylene diphosphonate, and its structural formula is:

[0020]

[0021] The composition of bauxite in Xiaoguan Mining Area, Henan Province is shown in Table 1.

[0022] Table 1 Chemical multi-element analysis of raw ore

[0023] element

Al 2 o 3

SiO 2

Fe 2 o 3

TiO 2

CaO

MgO

K 2 o

Na 2 o

S

A / S

content(%)

58.85

11.79

10.86

2.65

0.68

0.29

1.34

0.078

0.22

4.99

[0024] The positive flotation process system is: the particle size of the bauxite grinding product is -0.074mm, accounting for 85%, the alkalinity of the flotation system is controlled to be pH=10, and sodium oleate is used as the collector, and the dosage is 500- 800g / t, the amount of regulator is 60g / t, and the beneficiation process is a roughing open circuit process. Compared with the conventio...

Embodiment 2

[0029] A positive flotation regulator for bauxite, which is a modified phosphate, the main component is sodium hydroxyethylene diphosphonate, and its structural formula is:

[0030] .

[0031] The composition of bauxite in Xiaoguan Mining Area, Henan Province is shown in Table 1.

[0032] The positive flotation process system is: the particle size of the bauxite grinding product is -0.074mm, accounting for 85%, the alkalinity of the flotation system is controlled to be pH=9, and sodium oleate is used as the collector, and the dosage is 700- 1100g / 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.

[0033] Table 2 Results of comparison test of modifiers

[0034]

[0035] The test results show that the special-effect regulator of the present invention can significantly strengthen the selective inhibition of silicon-...

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Abstract

The invention discloses a regulator for bauxite forward flotation and an application method of the regulator. The regulator is one kind of modified phosphate and mainly comprises 1-hydroxy ethylidene-1,1-diphosphonic acid potassium or 1-hydroxy ethylidene-1,1-diphosphonic acid sodium. The application method comprises the steps that when bauxite forward flotation is carried out, for bauxite with the alumina-silica ratio of 3:5, the granularity property of ore grinding products is -0.074 mm, the granulometric class is 80%-90%, the pH value of a flotation system is controlled to be 9-11, sodium oleate is adopted as a collecting agent, the use amount is 500-1,200 g / t, and the use amount of the regulator is 60-70 g / t. The regulator is applied to a bauxite forward flotation and desilicication technology, and the selective inhibition function on silicon containing ore can be enhanced; and meanwhile the elimination capacity on unavoidable ions (such as Ca2+ and Mg2+) is improved, and the effect of bauxite forward flotation is improved.

Description

technical field [0001] The invention relates to the field of mineral processing engineering, in particular to a regulator for positive flotation of bauxite and a using method thereof, which belongs to resource comprehensive utilization engineering. 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 successf...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B03D1/014B03D1/00
CPCB03D1/00B03D1/014
Inventor 刘长淼卫敏吴东印冯安生吕子虎赵登魁
Owner ZHENGZHOU MINERALS COMPOSITIVE UTILIZATION RES INST CHINESE GEOLOGICAL ACAD
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