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Production process of complex phosphate fertilizer

A production process and technology for mixing fertilizers, applied in fertilization devices, fertilizer mixtures, applications, etc., can solve the problem of being susceptible to weather, electricity, water, and mechanical failures, heavy metal lead easily exceeding quality standards, and difficult to control moisture and free acid. and other issues, to achieve the effect of consolidating the sustainable development of agriculture, improving the quality and structure of soil, and promoting the sustainable development of industry.

Active Publication Date: 2013-08-21
四川省鑫铃肥业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The above two products, in addition to effective P 2 o 5 ≥12%, moisture ≤15%, free acid ≤5.5%, and available sulfur 3%~5%, this kind of superphosphate production process is vulnerable to weather, electricity, water and mechanical failures in the production process Impact, moisture and free acid are difficult to control, workers have to rework frequently, and the hazardous element heavy metal lead is easy to exceed the quality standard, or even exceed the standard by twice

Method used

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  • Production process of complex phosphate fertilizer

Examples

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Effect test

Embodiment 1

[0037] A kind of production technology of compound phosphate fertilizer, it comprises the following steps:

[0038] (1) Mix 14.8 tons of phosphorus-containing waste ash and 18.2 tons of superphosphate evenly to obtain 33 tons of mixed fertilizer A;

[0039] (2) Evenly mix 9 tons of phosphorus slag with 18 tons of filter acrylic to obtain 27 tons of mixed fertilizer B;

[0040] (3) Mix 33 tons of mixed fertilizer A with 27 tons of mixed fertilizer B to obtain 60 tons of mixed fertilizer C;

[0041] (4) Mix 60 tons of mixed fertilizer C and 240 tons of pot ash evenly to get 300 tons of mixed fertilizer D;

[0042] (5) Mix 300 tons of mixed fertilizer D and 600 tons of white fertilizer evenly to obtain 900 tons of finished product.

[0043] Wherein, the production of superphosphate is as follows:

[0044] Use phosphate rock with a content of ≥24% and add water to grind it into a water content of 28% to 33%, a fineness of 88 to 98 mesh, mix the pulp with 98% concentration of su...

Embodiment 2

[0047] A kind of production technology of compound phosphate fertilizer, it comprises the following steps:

[0048] (1) Evenly mix 12.5 tons of phosphorus-containing waste ash with 15.1 tons of superphosphate to obtain 27.6 tons of mixed fertilizer A;

[0049] (2) Evenly mix 11.9 tons of phosphorus slag with 21.8 tons of filter acrylic to obtain 33.7 tons of mixed fertilizer B;

[0050] (3) Mix 27.6 tons of mixed fertilizer A with 33.7 tons of mixed fertilizer B to obtain 61.3 tons of mixed fertilizer C;

[0051] (4) Evenly mix 61.3 tons of mixed fertilizer C with 200 tons of pot ash to obtain 261.3 tons of mixed fertilizer D;

[0052] (5) Mix 261.3 tons of mixed fertilizer D and 638.7 tons of white fertilizer evenly to obtain 900 tons of finished products.

[0053] Wherein, the production of superphosphate is as follows:

[0054] Grind 70 tons of phosphate rock with a content of 24% into a water ball to form a pulp with a water content of 30% and a fineness of 92 mesh, mix...

Embodiment 3

[0056] A kind of production technology of compound phosphate fertilizer, it comprises the following steps:

[0057] (1) Mix 16 tons of waste ash containing phosphorus and 13 tons of superphosphate evenly to obtain 29 tons of mixed fertilizer A;

[0058] (2) Mix 11 tons of phosphorus slag and 18 tons of filter acrylic evenly to obtain 29 tons of mixed fertilizer B;

[0059] (3) Mix 29 tons of mixed fertilizer A with 29 tons of mixed fertilizer B to obtain 58 tons of mixed fertilizer C;

[0060] (4) Mix 58 tons of mixed fertilizer C and 283.4 tons of pot ash evenly to obtain 341.4 tons of mixed fertilizer D;

[0061] (5) Mix 341.4 tons of mixed fertilizer D and 558.6 tons of white fertilizer evenly to obtain 900 tons of finished products.

[0062] Wherein, the production of superphosphate is as follows:

[0063] Grind 70 tons of phosphate rock with a content of 24% into a water ball to form a slurry with a water content of 33%, a fineness of 98 mesh, and 33 tons of sulfuric aci...

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Abstract

The invention provides a production process of complex phosphate fertilizer, which comprises the following steps: (1) uniformly mixing phosphorus-containing waste ash and calcium superphosphate according to weight ratio 0.9-1.1:0.9-1.1, obtaining complex fertilizer A; (2) uniformly phosphor slag and filter cake according to weight ratio 0.9-1.1:1.8-2.2, obtaining complex fertilizer B; (3) uniformly complex fertilizer A and complex fertilizer B according to weight ratio 0.9-1.1:0.9-1.1, obtaining complex fertilizer C; (4) uniformly complex fertilizer C and pan ash according to weight ratio 0.9-1.1:3.6-4.4, obtaining complex fertilizer D; (5) uniformly complex fertilizer D and white fertilizer according to weight ratio 0.9-1.1:1.8-2.2, obtaining the finished product. Compared with the prior art, the invention has the beneficial effect that the 'three wastes (waste gas, waste water and industrial residue)' raw material can be used for producing complex phosphate fertilizer, thereby reducing production cost, saving energy resource, and producing products with stable quality, which accords with the national standard.

Description

technical field [0001] The invention relates to a production process of compound phosphate fertilizer. Background technique [0002] At present, there are two processes for producing superphosphate: [0003] 1. Use phosphate rock with a content of ≥24% and add water balls to grind it into a water content of 28% to 33%, a fineness of 88 to 98 mesh pulp and 98% concentration of sulfuric acid at a ratio of 3:1, aging for 8 hours to obtain superphosphate. [0004] 2. Use phosphate rock with a content of ≥24% to dry and ball-mill it into slag powder with a fineness of 88-98 mesh and mix it with sulfuric acid at a concentration of 70% at a ratio of 3:1, and ripen for 24 hours to obtain superphosphate. [0005] The above two products, in addition to effective P 2 o 5 ≥12%, moisture ≤15%, free acid ≤5.5%, and available sulfur 3%~5%, this kind of superphosphate production process is vulnerable to weather, electricity, water and mechanical failures in the production process impact...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C05G1/00
Inventor 赵正富
Owner 四川省鑫铃肥业有限公司
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