Reverse flotation process for synchronously removing magnesium and aluminum in phosphorite

A reverse flotation, magnesium-aluminum technology, used in flotation, solid separation and other directions, can solve the problems of negative impact of sorting, and achieve the effect of better fluidity, convenient transportation and strong adaptability

Active Publication Date: 2021-07-30
YIDU XINGFA CHEM COMPANY
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The advantage of this method is that it has a more streamlined process structure than the double reverse flotation process, which can significantly reduce the cost of flotation. However, this process only has one outlet for phosphorus tailings, and the organic matter with good floatability and dolomite in the raw ore can be obtained. If it is not discharged in time, it will circulate in the process, which will have a great negative impact on the sorting

Method used

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  • Reverse flotation process for synchronously removing magnesium and aluminum in phosphorite
  • Reverse flotation process for synchronously removing magnesium and aluminum in phosphorite
  • Reverse flotation process for synchronously removing magnesium and aluminum in phosphorite

Examples

Experimental program
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Effect test

Embodiment 1

[0023] A reverse flotation process for simultaneous removal of magnesium and aluminum in phosphate rock. The specific steps of the method described in this embodiment are:

[0024] (1) Put P 2 O 5 Grade 29.0%, MgO content 1.6%, Al 2 O 3 Phosphate pulp with a content of 3.0%, a particle size of less than 0.074mm accounting for 64.0%, and a pulp concentration of 30.0wt% is introduced into the synchronous reverse flotation process; a regulator (sulfuric acid and aluminum sulfate in a molar ratio of 7.0:1.0) is added to the phosphate pulp. mixture), the amount of addition is 6.9kg / t; then add fatty acid collectors (sodium salt of oleic acid, linoleic acid, palmitic acid, stearic acid to the phosphate slurry at a mass ratio of 4.5:1.0 to The mixture of mass ratio 14:10:14:62 composition) and amine collector (dodecylamine acetate), the total amount of collector addition is 0.3kg / t, carries out pre-flotation, obtains product I in the tank and foam product I, which is phosphorus ...

Embodiment 2

[0033]A reverse flotation process for simultaneous removal of magnesium and aluminum in phosphate rock. The specific steps of the method described in this embodiment are:

[0034] (1) Put P 2 O 5 Grade 26.2%, MgO content 1.64%, Al 2 O 3 Phosphate pulp with a content of 3.8%, a particle size of less than 0.074mm, accounting for 76.0%, and a pulp concentration of 25.0wt% is introduced into the synchronous reverse flotation process; a modifier (sulfuric acid and aluminum sulfate in a molar ratio of 6.0:1.0) is added to the phosphate pulp. mixture), the addition amount is 9.6kg / t; then add fatty acid collectors (sodium salt of oleic acid, linoleic acid, palmitic acid, stearic acid to the phosphate slurry at a mass ratio of 4.0:1.0 to The mixture of mass ratio 14:10:14:62 composition) and amine collector (dodecylamine acetate), the total amount of collector added is 0.44kg / t, carries out pre-flotation, obtains product I in the tank and foam product I, which is phosphorus taili...

Embodiment 3

[0043] A reverse flotation process for simultaneous removal of magnesium and aluminum in phosphate rock. The specific steps of the method described in this embodiment are:

[0044] (1) Put P 2 O 5 Grade 24.0%, MgO content 2.29%, Al 2 O 3 Phosphate pulp with a content of 3.76%, a particle size of less than 0.074mm accounting for 80.0%, and a pulp concentration of 35.0wt% is introduced into the synchronous reverse flotation process; a regulator (sulfuric acid and aluminum sulfate in a molar ratio of 4.0:1.0) is added to the phosphate pulp. mixture), the addition amount is 9.9kg / t; then add fatty acid collectors (sodium salt of oleic acid, linoleic acid, palmitic acid, stearic acid to the phosphate slurry at a mass ratio of 3.5:1.0 to The mixture of mass ratio 14:10:14:62 composition) and amine collector (dodecylamine acetate), the total amount of collector added is 0.60kg / t, carries out pre-flotation, obtains product I in the tank and foam product I, which is phosphorus tai...

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Abstract

The invention relates to a reverse flotation process for synchronously removing magnesium and aluminum in phosphorite. According to the the reverse flotation process provided by the technical schemes, phosphoric ore pulp is introduced into the synchronous reverse flotation process. The process comprises the following steps of: adding a regulating agent into the phosphoric ore pulp, synchronously adding a fatty acid collecting agent and an amine collecting agent into the phosphoric ore pulp, carrying out pre-flotation operation to obtain an in-tank product I and a foam product I which is phosphate tailings I; introducing the in-tank product I into rough flotation operation, carrying out rough flotation to obtain an in-tank product II and a foam product II which is phosphate concentrate; introducing the foam product II into first scavenging operation for scavenging to obtain an in-tank product III and a foam product III; returning the in-tank product III to the previous step to make the in-tank product III enter the roughing operation together with the in-tank product I; introducing the foam product III into second scavenging operation for scavenging to obtain an in-tank product IV and a foam product IV which is phosphate tailings II; and returning the in-tank product IV to the previous step to make the in-tank product IV enter the first scavenging operation together with the foam product II. The process has the advantages of being high in ore adaptability, small in flotation reagent consumption and low in ore dressing cost.

Description

technical field [0001] The invention belongs to the technical field of phosphate rock separation, in particular to a reverse flotation process for synchronously removing magnesium and aluminum in phosphate rock. Background technique [0002] my country's phosphate rock resources are among the top three in the world, but there are few rich ore and more lean ore. 2 O 5 The rich ore with a grade higher than 30% only accounts for about 8% of the total reserves, and most of the phosphate rock must be enriched before it can be used with high added value. Flotation is widely used in phosphate ore beneficiation. For phosphate ore with many types of impurities and high impurity content, positive-reverse (reverse-positive) flotation or double-reverse flotation is required to effectively remove impurities. These two mainstream The traditional flotation process has insurmountable shortcomings in practical applications, among which the forward-reverse flotation cost is high, and the do...

Claims

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Application Information

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IPC IPC(8): B03D1/00B03D1/02B03D101/02B03D101/00B03D103/06
CPCB03D1/00B03D1/021B03D2201/007B03D2201/02B03D2203/06
Inventor 刘鑫郑光明陈慧王旭东李防孙桦林刘兵兵刘海方
Owner YIDU XINGFA CHEM COMPANY
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