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Catching agent for reverse flotation of carbonate and silicate in phosphorite at same time and preparation method for same

A collector and carbonate technology, which is applied in flotation, solid separation, etc., can solve the problems of large amount of chemicals, many types of chemicals, and high cost, so as to reduce the amount of chemicals, reduce the cost of phosphate rock flotation, and separate significant effect

Inactive Publication Date: 2016-12-14
HUBEI FORBON TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Both of the above two flotation processes exist, the process is long, there are many types of reagents, the preparation of reagents is complicated, the amount of reagents is large, and the cost is high.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0012] The preparation method of collector is: by the mixture of 0.4 part (weight) of C14 saturated fatty acid and 0.6 part (weight) of oleic acid as raw material, the mixture is heated to 90 ℃, and adding mass concentration is 30% caustic soda solution and stirring saponification, control The pH value is 8, saponified for 50 minutes to obtain a semi-finished product, based on the semi-finished product, add 0.03 parts of polypropylene glycol ether with a molecular weight of 400 and 0.02 parts of dodecylalanine to the semi-finished product after saponification and mix to obtain the product Invent the finished product. When the raw ore grade P 2 o 5 21% for MgO, 3% for SiO 2 When it is 20%, use the product of the present invention to add 800 grams per ton of phosphate rock to carry out reverse flotation, adopt a rough, sweep, medium ore return closed-circuit process, the concentrate grade reaches 34.86% on average, and the MgO in the concentrate is 0.81 %, SiO in concentrate ...

Embodiment 2

[0014] The preparation method of the collector is as follows: a mixture of 0.5 parts of C18 saturated fatty acid and 0.5 parts of linoleic acid (by weight) is used as a raw material, the mixture is heated to 100° C., and a caustic soda solution with a mass concentration of 30% is added and stirred for saponification to control the pH value 9. Saponify for 70 minutes to obtain a semi-finished product. Take the semi-finished product as a basis for 1 part, add 0.04 parts of polypropylene glycol ether with a molecular weight of 800 and 0.04 part of tetradecylalanine to the saponified semi-finished product at the same time to obtain the finished product of the present invention . When the raw ore grade P 2 o 5 23% for MgO, 4% for SiO 2 When it is 20%, use the product of the present invention to add 800 grams per ton of phosphate rock to carry out reverse flotation, adopt a rough, sweep, medium ore return closed-circuit process, the concentrate grade reaches 35.18% on average, and...

Embodiment 3

[0016] The preparation method of collector is: by the mixture of 0.6 part (weight) of C16 saturated fatty acid and 0.4 part (weight) of oleic acid as raw material, the mixture is heated to 80 ℃, and adding mass concentration is 30% caustic soda solution and stirring saponification, control The pH value is 9, saponified for 60 minutes to obtain a semi-finished product, based on 1 part of the semi-finished product, adding 0.05 part of polypropylene glycol ether with a molecular weight of 600 and 0.02 part of octadecylalanine to the semi-finished product after saponification and mixing to obtain the product Invent the finished product. When the raw ore grade P 2 o 5 23% for MgO, 3.5% for SiO 2 When it is 20%, use the product of the present invention to add 800 grams per ton of phosphate rock to carry out reverse flotation, adopt a rough, sweep, medium ore return closed-circuit process, the concentrate grade reaches 34.12% on average, and the MgO in the concentrate is 0.88 %, S...

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Abstract

The invention relates to a catching agent for reverse flotation of carbonate and silicate in phosphorite at the same time and a preparation method for the same. The catching agent preparation method comprises steps of mixinig 0.4 to 0.6 parts of C14 to C18 saturated fatty acid and 0.4 to 0.6 parts of oleic acid or linoleic acid, heating the mixture to the temperature of 80 to 100 DEG C, adding alkali liquor and stirring to saponify the mixture, controlling a pH value to be 8 to 9, saponifying for 50 to 70 minutes to achieve a semi-finished product, and adding 0.01 to 0.05 parts of polypropylene glycol and 0.01 to 0.05 parts of alkyl amino propionic acid to mix to achieve the catching agent. The catching agent can be applied to silicon calcium phosphate mines; reverse floatation of minerals of carbonate and silicate in the phosphorite can be achieved at the same time; and great selection effect can be achieved. Compared with the prior art, and removal process of carbonate and silicate minerals in the phosphorite and preparation of agents can be simplified by the use of the catching agent; and agent use amount and phosphorite floatation cost can be reduced.

Description

technical field [0001] The invention belongs to the technical field of phosphate rock beneficiation, in particular to a simultaneous reverse flotation collector of carbonate and silicate in phosphate rock and a preparation method thereof. Background technique [0002] In phosphate rock flotation, many low-grade and medium-grade phosphate rocks need to remove carbonate minerals and silicate minerals at the same time. The flotation process usually used is: forward and reverse flotation process or double reverse flotation process. The positive and negative flotation process is to add alkali and water glass to inhibit silicate, add positive flotation collector to select phosphate and carbonate minerals, and then add inorganic acid to phosphate and carbonate to inhibit phosphate, Carbonate collectors are added for reverse flotation to remove carbonates, and finally phosphorous concentrates are obtained. The double reverse flotation process is to add inorganic acid to inhibit pho...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B03D1/008B03D1/016B03D1/01B03D101/02
CPCB03D1/008B03D1/01B03D1/016B03D2201/02B03D2203/06
Inventor 左大学王仁宗刘裕
Owner HUBEI FORBON TECH
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