A kind of phosphate rock reverse flotation desilication aluminum collector and its preparation method and application

A technology for desiliconization and collectors by reverse flotation, applied in flotation, solid separation and other directions, can solve the problems of high beneficiation cost, many types of reagents, difficult enterprises, etc., and achieve good flotation performance, moderate cost of reagents, and recovery. Use less difficult effects

Active Publication Date: 2021-07-09
BEIJING MINING & METALLURGICAL TECH GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Aiming at this low-grade and refractory colloidal phosphate resource, the currently developed beneficiation processes mainly include direct-reverse flotation, double-reverse flotation, gravity separation-coarse and fine-grained separation-coarse double-reverse flotation-fine-grained positive -Reverse flotation, desliming-direct-reverse flotation and reverse-direct flotation and other processes, among which the most likely to be industrialized is the forward-reverse process, but due to problems such as high beneficiation costs, many types of chemicals, and difficult utilization of backwater Make it difficult for companies to choose
Theoretically speaking, double reverse flotation is the most suitable beneficiation process for low- and medium-grade collophanite, but due to the lack of a kind of flotation performance, low reagent cost, good natural defoaming performance and fluidity of mineralized foam Better reverse flotation desilication aluminum collector but difficult to industrialize
Although the reverse flotation collector mentioned in CN103286007A can also realize the ore of phosphorus concentrate, it limits its utilization range for the phosphorus concentrate after demagnesification
Another example is a kind of phosphate rock amphoteric collector proposed in CN104888968A, which needs to add various reagents such as sulfuric acid, lemonade and water glass in the flotation process.

Method used

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  • A kind of phosphate rock reverse flotation desilication aluminum collector and its preparation method and application
  • A kind of phosphate rock reverse flotation desilication aluminum collector and its preparation method and application

Examples

Experimental program
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Effect test

Embodiment 1

[0041] In parts by weight, mix 2 parts of lauryl ether amine, 4 parts of tetradecyl ether amine and 4 parts of lauryl ether amine, and stir evenly to obtain mixed amine; mix 5 parts of n-octanol, 1 part of isooctyl ether Alcohol is mixed with 4 parts of decanol, stirred evenly to obtain mixed alcohol; mixed with 5 parts of prepared mixed amine, 3 parts of prepared mixed alcohol and 2 parts of methyl cocoate, stirred evenly to obtain the reverse flotation desiliconization of phosphate rock Aluminum efficient collector.

[0042] A double-reverse impurity removal test on a medium-low-grade silicon-calcium high-sesquioxide phosphorite in Hubei (all the dosages of the following agents are for raw ore): P in the selected raw ore 2 o 5 Grade is 25.32%, MgO grade is 2.87%, Al 2 o 3 Grade 3.68%, Fe 2 o 3 Grade 1.53%. Grinding and grading the raw ore to obtain a grinding fineness of -0.074mm, the particle size content accounts for 65%, and the overflow with a pulp concentration of...

Embodiment 2

[0045] In parts by weight, mix 3 parts of lauryl ether amine, 5 parts of tetradecyl ether amine and 2 parts of lauryl ether amine, and stir evenly to obtain mixed amine; mix 7 parts of n-octanol, 1 part of isooctyl ether Alcohol is mixed with 2 parts of decanol, stirred evenly to obtain mixed alcohol; mixed with 6 parts of prepared mixed amines, 2 parts of prepared mixed alcohol and 2 parts of methyl cocoate, stirred evenly to obtain the reverse flotation desiliconization of phosphate rock Aluminum efficient collector.

[0046] Double-reverse impurity removal test of a low-grade weathered siliceous-calcium high-sesquioxide phosphorite in Yunnan: selected raw ore P 2 o 5 Grade is 18.55%, MgO grade is 3.54%, Al 2 o 3 Grade 3.47%, Fe 2 o 3 Grade 2.53%. Grinding and grading the raw ore to obtain a grinding fineness of -0.074mm, the particle size content accounts for 70%, and the overflow with a pulp concentration of 27% undergoes double reverse flotation, first reverse flota...

Embodiment 3

[0049] In parts by weight, mix 1 part of lauryl ether amine, 6 parts of tetradecyl ether amine and 3 parts of lauryl ether amine, and stir evenly to obtain mixed amine; mix 6 parts of n-octanol, 2 parts of isooctyl Alcohol is mixed with 2 parts of decanol, stirred evenly to obtain mixed alcohol; mixed with 4 parts of prepared mixed amine, 3 parts of prepared mixed alcohol and 3 parts of methyl cocoate, stirred evenly to obtain the reverse flotation desiliconization of phosphate rock Aluminum efficient collector.

[0050] Double-reverse impurity removal test on a medium-low-grade silicon-calcium high-sesquioxide phosphorite in Guizhou (all the dosages of the following agents are for raw ore): selected raw ore P 2 o 5 Grade is 24.68%, MgO grade is 2.52%, Al 2 o 3 Grade 4.32%, Fe 2 o 3 Grade 1.78%. Grinding and grading the raw ore to obtain a grinding fineness of -0.074mm, the particle size content accounts for 68%, and the overflow with a pulp concentration of 35% undergoe...

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Abstract

The present invention relates to a phosphate rock reverse flotation desilication aluminum collector and its preparation method and application, the collector comprises: mixed amine, mixed alcohol and methyl cocoate; the phosphate rock reverse flotation provided in the present invention The silicon-aluminum collector has the advantages of good flotation performance, low temperature resistance, moderate reagent cost, and a wide pH range (between 5-10) for flotation; at the same time, there are also minerals when using the collector for flotation. It has the advantages of brittle foam and good fluidity. In the reverse flotation operation, the collector only needs to be used for desilication and aluminum removal, so that the types of flotation reagents are reduced. Obviously, it is less difficult to reuse all the backwater.

Description

technical field [0001] The present invention relates to the field of phosphate rock flotation, and relates to a phosphate rock reverse flotation silicon-aluminum collector and its preparation method and application, especially to a medium and low-grade phosphorus rock reverse flotation removal of silicon-containing minerals and Collector for aluminous gangue and its preparation method and use. Background technique [0002] 70% of my country's phosphate rock resources belong to sedimentary rock-type phosphorites, which are mainly distributed in Yunnan, Guizhou, Sichuan, Hunan and Hubei. With the mining of easy-to-select medium-high-grade magnesia phosphorites, the medium-low-grade silicon-calcium is twice as high Oxide phosphorite must also be developed and utilized. Aiming at this low-grade and refractory colloidal phosphate resource, the currently developed beneficiation processes mainly include direct-reverse flotation, double-reverse flotation, gravity separation-coarse a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B03D1/01B03D101/02B03D103/06
CPCB03D1/01B03D2201/02B03D2203/06
Inventor 李松清孙昊胡晓星郑桂兵朱阳戈崔强肖婉琴宋振国周兵仔任爱军
Owner BEIJING MINING & METALLURGICAL TECH GRP CO LTD
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