Method for producing powdered rock phosphate balls by using powdered rock phosphate

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: 2014-08-06
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

Method used

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  • Method for producing powdered rock phosphate balls by using powdered rock phosphate

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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 briquette machine to briquette under a pressure of 100 tons, and the unformed mixture...

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 percentage 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 ...

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Abstract

The invention relates to the technical field of mineral processing, in particular to a method for producing powdered rock phosphate balls by using powdered rock phosphate screened out by enterprises or mineral powder left after mine production with low-concentration phosphoric acid. The method comprises the steps of screening, batching, mixing, ball pressing, drying and cooling; in the method, the content of P2O5 in phosphate rock is increased as a phosphate acid and phosphate binder is adopted and the P2O5 in the binder ultimately enters a furnace and participates the phosphorus producing reaction, and the quality of phosphate rock is improved; carbonate impurities in the added phosphoric acid and phosphate rock are subjected to chemical replacement reaction, and mixing is carried out by a double-roll mixer, so that carbon dioxide and organic matters harmful to the electric furnace during production can be fully released; in the production of yellow phosphor, the power consumption of the electric furnace can be reduced by 190 kilowatt hour as long as 1% of CO2 content is reduced, the consumption of coke can be reduced by 29 kilograms, and the production costs of the enterprises can be greatly reduced.

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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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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