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Method for producing phosphate rock powder balls from phosphate rock powder

A technology of phosphate rock powder and phosphoric acid, which is applied in the field of mineral processing, can solve problems such as low utilization rate and waste of raw ore, and achieve the effects of improving grade, reducing coke consumption, and reducing production cost

Active Publication Date: 2016-01-20
贵州福泉川东化工有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] The object of the present invention is to solve the problems in the above-mentioned technologies, and provide a method for producing phosphate rock powder balls by using phosphate rock powder. , to solve the problems of serious waste of raw ore and low utilization rate in existing production

Method used

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  • Method for producing phosphate rock powder balls from phosphate rock powder

Examples

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Comparison scheme
Effect test

Embodiment 1

[0030] A kind of method utilizing phosphate rock powder to produce phosphate rock powder ball, comprises the following steps (as figure 1 shown):

[0031] (1) Screening: The phosphate rock powder screened by the production enterprise or the remaining mineral powder produced in the mine concentrate is screened with a 2-mesh screen. The massive mineral material is directly used for the production of yellow phosphorus. The screened powder The material then enters the batching step;

[0032] (2) Batching: carry out batching by 100 parts of phosphate rock powder, 2 parts of phosphoric acid and 0.5 part of phosphate binder, then drop into agitator and stir evenly, the mass percentage concentration of phosphoric acid is 10%, and phosphate binder is magnesium phosphate;

[0033] (3) Mixing: The evenly stirred mixture is transported into the double-roller mixer for full mixing, so that the CO in the mixture 2 freed;

[0034] (4) Ball briquetting: send the uniformly mixed powder int...

Embodiment 2

[0038] A kind of method utilizing phosphate rock powder to produce phosphate rock powder ball, comprises the following steps (as figure 1 shown):

[0039] (1) Screening: use 10-mesh sieve to screen the phosphate rock powder screened by the production enterprise or the remaining mineral powder produced in the mine. The material then enters the batching step;

[0040] (2) Batching: carry out batching according to 100 parts of phosphate rock powder, 5 parts of phosphoric acid and 1 part of phosphate binder, then drop into the stirrer and stir evenly, the mass percentage concentration of phosphoric acid is 30%, and phosphate binder is Magnesium phosphate and calcium phosphate;

[0041] (3) Mixing: The evenly stirred mixture is transported into the double-roller mixer for full mixing, so that the CO in the mixture 2 freed;

[0042] (4) Ball briquetting: send the uniformly mixed powder into the briquetting machine to briquette under a pressure of 100 tons, and the unformed mixtu...

Embodiment 3

[0046] A kind of method utilizing phosphate rock powder to produce phosphate rock powder ball, comprises the following steps (as figure 1 shown):

[0047] (1) Screening: The phosphate rock powder screened by the production enterprise or the remaining mineral powder produced by the mine on the mine is screened with a 15-mesh screen. The massive mineral material is directly used for yellow phosphorus production. The screened powder The material then enters the batching step;

[0048] (2) Batching: carry out batching by 100 parts of phosphate rock powder, 8 parts of phosphoric acid and 2 parts of phosphate binder, then drop into agitator and stir evenly, the mass percent concentration of phosphoric acid is 50%, phosphate binder is Magnesium phosphate and aluminum phosphate;

[0049] (3) Mixing: The evenly stirred mixture is transported into the double-roller mixer for full mixing, so that the CO in the mixture 2 freed;

[0050] (4) Ball briquetting: send the uniformly mixed pow...

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Abstract

The invention relates to the technical field of mineral processing, specifically a method for producing phosphate rock balls by using phosphate rock powder sieved by enterprises, or the remaining mineral powder and low-concentration phosphoric acid in mine production concentrates, including sieving , batching, mixing, briquetting, drying and cooling steps; among the present invention, owing to adopt phosphoric acid and phosphate binding agent, the P in phosphoric acid and phosphate binding agent O finally enters in the stove and participates in the reaction of phosphorus production, has improved The content of P2O5 in the phosphate rock improves the grade of the phosphate rock; the added phosphoric acid and the carbonate impurities in the phosphate rock carry out a chemical replacement reaction, and use a double-roller mixer for mixing, and the full release is harmful to the production of the electric furnace CO2 and organic matter, in the production of yellow phosphorus, for every 1% CO2 reduction, the power consumption of the electric furnace will be reduced by 190 degrees, and the coke consumption will be reduced by 29 kg, which can greatly reduce the production cost of the enterprise.

Description

technical field [0001] The invention relates to the technical field of mineral processing, in particular to a method for producing phosphate rock powder balls by using phosphate rock powder sieved by enterprises, or the remaining mineral powder and low-concentration phosphoric acid in mines. Background technique [0002] In order to reduce the production cost of yellow phosphorus, the phosphate rock raw materials used by yellow phosphorus manufacturers are mainly rich ore (P2O5 mass fraction > 28%). After several years of excessive and indiscriminate mining, there are not many rich ore left, and the resources are seriously damaged. Most yellow phosphorus production enterprises in China only use lump ore, and they cannot use medium and low-grade phosphate rock powder that can meet the requirements for furnace feeding because there is no pellet (block) sintering device and technology. Most of the enterprises with mineral resources and relying on mining and marketing mine b...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01B25/01
Inventor 张宜辉项德英
Owner 贵州福泉川东化工有限公司
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