Method for molding phosphate detritus

A technology of phosphate rock and water glass, applied in the direction of phosphate material processing, etc., can solve the problem of no report on molding and curing, and achieve the effects of improving the relative phosphorus grade, simple operation and low investment.

Active Publication Date: 2014-06-18
KUNMING UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] In summary, crushed phosphate rock or phosphate rock powder is bonded and sintered into pellets, phosphoric acid is bonded to low-temperature calcination, and lime is digested and carbonized into pellets. The molding and solidification of phosphate rock has not been reported yet

Method used

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  • Method for molding phosphate detritus

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Experimental program
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Effect test

Embodiment approach 1

[0021] Implementation mode one: if figure 1 As shown, the method for forming and solidifying the crushed phosphate rock of the present embodiment is:

[0022] (1) First calcinate the kaolin at 600°C for 60 minutes, and grind it for later use;

[0023] (2) Weigh 100kg of crushed phosphate rock with a particle size greater than 5mm, accounting for 9.7% of the total, and passing through a 60-mesh square hole sieve, accounting for 22% of fine ore. Add 4kg of activated kaolin from the above (1) into the mixer, mix and homogenize Finally add 10kg of water, continue to stir and mix, then add the water glass 5kg that modulus is 2.8, Baume degree is 49.6Be, continue to stir, until material mixes;

[0024] (3) The formed blocks in the above (2) step are automatically stacked by a robot, and then sent to the greenhouse curing room with a forklift, and sampled and analyzed after 20 days of curing;

[0025] (4) Performance test: Three blocks were taken for strength analysis, and the aver...

Embodiment approach 2

[0026] Implementation mode two: if figure 1 As shown, the method for forming and solidifying the crushed phosphate rock of the present embodiment is:

[0027] (1) Calcinate the kaolin at 700°C for 40 minutes, and grind it for later use;

[0028] (2) Weigh 100kg of crushed phosphate rock whose particle size is greater than 5mm, accounting for 8.2% of the total, and passing through a 60-mesh square hole sieve, accounting for 32% of fine ore. Add 4kg of activated kaolin from the above (1) into the mixer, mix and homogenize Finally add 11kg of water, continue to stir and mix, then add the water glass 4.5kg that modulus is 3.0, Baume degree is 47.5Be, continue to stir, until material mixes;

[0029] (3) The formed blocks in the above (2) step are automatically stacked by a robot, and then sent to the greenhouse curing room with a forklift, and sampled and analyzed after 25 days of curing;

[0030] (4) Performance test: Three blocks were taken for strength analysis, and the averag...

Embodiment approach 3

[0031] Implementation mode three: if figure 1 As shown, the method for forming and solidifying the crushed phosphate rock of the present embodiment is:

[0032] (1) Calcinate the kaolin at 650°C for 50 minutes, and grind it for later use;

[0033] (2) Weigh 100kg of crushed phosphate rock with a particle size greater than 5mm, accounting for 5.3% of the total, and passing through a 60-mesh square hole sieve, accounting for 42% of fine ore. Add 4kg of activated kaolin from the above (1) into the mixer, mix and homogenize Finally add 12kg of water, continue to stir and mix, then add the water glass 5kg that modulus is 3.2, Baume degree is 45Be, continue to stir, until material mixes;

[0034] (3) The formed blocks in the above (2) step are automatically stacked by a robot, and then sent to the greenhouse curing room by a forklift, and sampled and analyzed after 28 days of curing;

[0035] (4) Performance test: Three blocks were taken for strength analysis, and the average compre...

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Abstract

The invention relates to a method for molding and solidifying phosphate detritus, belonging to the technical field of comprehensive utilization of mineral resources. The method comprises steps of adding activated kaolin accounting for 2-4% of the mass of dry matrix of the phosphate detritus, water glass accounting for 4-5% of the mass of dry matrix of the phosphate detritus, and process water accounting for 10-12% of the mass of dry matrix of the phosphate detritus into phosphate detritus, then stirring, mixing and homogenizing the mixture, after molding, standing and curing so as to obtain the finished product. The method has characteristics of simple production process, mature equipment, less investment, convenience in operation, low energy consumption, high strength molded mineral, and good high temperature heat stability, can reduce the serpentine consumption in production of yellow phosphorus by an electric furnace method, and can be used as the raw material for producing yellow phosphorus by the electric furnace method.

Description

technical field [0001] The invention relates to a method for forming crushed phosphate rock, which belongs to the technical field of comprehensive utilization of mineral resources. Background technique [0002] The phosphorus source of yellow phosphorus production by electric furnace method comes from phosphate rock, the main chemical composition is calcium phosphate, which also contains elements such as fluorine and chlorine, and Ca 5 (OP4) 3 (F, Cl, OH) characterizes its chemical formula, also known as apatite. Apatite crystals are hexagonal columnar, aggregates are granular, dense massive, earthy and nodular, etc. There are five most common types in nature: fluoroapatite, chloroapatite, carbonapatite, and hydroxyphosphorus Limestone, fluoroapatite. [0003] my country has abundant reserves of phosphate rock resources, ranking second in the world, but the reserves of high-grade phosphate rock are low. Gradually scarce, the grade of raw materials for phosphorus chemical ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B25/01
Inventor 夏举佩李国斌苏毅刘成龙
Owner KUNMING UNIV OF SCI & TECH
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