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A novel inhibitor for bauxite beneficiation and its application method

A bauxite and inhibitor technology, applied in flotation, solid separation and other directions, can solve the problems of the decrease of Al2O3 recovery rate, the consumption of large sodium hexametaphosphate, the general effect of positive flotation, etc., to enhance the selective inhibition effect, The effect of promoting effective separation and eliminating the influence 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 inhibitors 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, inhibitors such as sodium hexametaphosphate eliminate the unavoidable ions in the pulp through complexation, often need to consume a large amount of sodium hexametaphosphate, and the effect is also general, resulting in general positive flotation effect

Method used

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  • A novel inhibitor for bauxite beneficiation and its application method
  • A novel inhibitor for bauxite beneficiation and its application method
  • A novel inhibitor for bauxite beneficiation and its application method

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example 1

[0020] A new inhibitor for bauxite beneficiation, it is a modified phosphate, the main component is pentasodium ethylenediamine tetramethylene phosphonate, its structural formula is:

[0021]

[0022] The composition of bauxite in Xiaoguan Mining Area, Henan Province is shown in Table 1.

[0023] Table 1 Chemical multi-element analysis of raw ore

[0024] 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

[0025] 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 dosage of inhibitor is 60g / t, and the beneficiation process is a roughing open-circuit process. Compared with the...

Embodiment 2

[0030] A new inhibitor for bauxite beneficiation, it is a modified phosphate, the main component is pentapotassium ethylenediamine tetramethylene phosphonate, its structural formula is:

[0031] .

[0032] The composition of bauxite in Xiaoguan Mining Area, Henan Province is shown in Table 1.

[0033] 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 dosage of inhibitor is 70g / t, and the beneficiation process is a roughing open-circuit process. Compared with the conventional inhibitor sodium hexametaphosphate, the test results are shown in Table 2.

[0034] Table 2 Inhibitor comparison test results

[0035]

[0036] Test result shows, adopt inhibitor (organic modified phosphate) of the present invention, can significantly strengthen the selective inhibi...

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Abstract

The invention discloses a novel inhibitor for processing of bauxite ore and a using method thereof. The inhibitor is modified phosphate, and the main component of the modified phosphate is ethylenediamine tetra methylenephosphonic acid pentasodium or ethylenediamine tetra methylenephosphonic acid pentapotassium. The using method comprises the following steps: when bauxite ore is directly floated, the granulometric property of a bauxite ore grinding product with the alumina-silica ratio being 3-5 is that the 0.074mm granulometric class accounts for 80-90 percnet, and the pH value of a floatation system is controlled by 9-11; sodium oleate is used as a collecting agent, and the dosage of the sodium oleate is 500-1200g / t. The dosage of the inhibitor is 60-70g / t. The novel inhibitor is applied to a process for bauxite ore silicon removal by direct flotation, can enhance the selective inhibition for silicon containing minerals, meanwhile enhances the elimination capacity for unavoidable ions (Ca2+, mg2+ and so on), and improves the effect of bauxite ore direct flotation.

Description

technical field [0001] The invention relates to the field of mineral processing engineering, in particular to a novel inhibitor for bauxite beneficiation and a method for using the same, 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 succe...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B03D1/014B03D101/06B03D103/04
CPCB03D1/014B03D2201/06B03D2203/04
Inventor 刘长淼卫敏吴东印吕子虎冯安生赵登魁
Owner ZHENGZHOU MINERALS COMPOSITIVE UTILIZATION RES INST CHINESE GEOLOGICAL ACAD
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