A treatment process and application of phosphate mineral acid method ore dressing and acid liquid produced in the beneficiation process

A treatment process and technology for phosphate rock, applied in the field of phosphate compound fertilizer, can solve the problem of acid hydrolysis purification liquid difficult to handle, and achieve the effect of reducing the amount of sulfuric acid used, good synergy and cost saving

Inactive Publication Date: 2018-05-08
SHANDONG HONGRI ACRON CHEM
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  • Claims
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Problems solved by technology

[0004] In order to overcome the above-mentioned deficiencies in the prior art, the present invention provides a treatment process and application of a kind of phosphate rock acid method ore dressing and the acid solution produced in the beneficiation process, the process can effectively remove metal oxides such as magnesium in the phosphate rock, And it solves the problem that the acid hydrolysis purification solution is difficult to handle

Method used

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  • A treatment process and application of phosphate mineral acid method ore dressing and acid liquid produced in the beneficiation process

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Effect test

Embodiment 1

[0018] A kind of treatment process of the acid solution produced in the ore beneficiation by phosphoric rock acid method and the ore beneficiation process, it comprises the following steps:

[0019] 1) Put the phosphate rock into the crusher for crushing, send it to the ball mill after coarse crushing, and grind it to a particle size of 100 mesh ore powder, wherein additives are added to the ball mill, and the amount of the additive added is the mass of the phosphate rock one-thousandth of;

[0020] 2) The mineral powder obtained in step 1) is transported to the purification reactor through the conveying equipment, firstly add the mixed bacterial solution, stir evenly, let it stand for 48 hours, then add 98% sulfuric acid, stir and react at 100 rpm for 12 hours, and then send to filter Machine, filtered to obtain solid materials and liquid materials, the solid materials are purified qualified phosphate rock, sent to the phosphoric acid workshop; the amount of mixed bacteria li...

Embodiment 2

[0028] The fertilizer effect test of the compound fertilizer that embodiment 1 prepares:

[0029] 1. Effect fertilizer experiment for planting sorghum:

[0030] Control group: compound fertilizer: containing 35% urea, 35% monoammonium phosphate, 30% potassium chloride;

[0031] Test group: the compound fertilizer that embodiment 1 prepares;

[0032] The soil quality and planting conditions of the experimental field are exactly the same, the area of ​​the control group and the experimental group are both 10 mu; the amount of fertilizer applied is 50kg / mu; the specific test results are shown in Table 1:

[0033] Table 1

[0034]

[0035] Note: the compound fertilizer is calculated at 2.8 yuan / kg, the organic fertilizer of the present invention is calculated at 2.3 yuan / kg, and the sorghum is calculated at 3.0 yuan / kg.

[0036] 2. Planting sweet potato fertilizer effect experiment:

[0037] Set up two treatment test fields, both with an area of ​​10 mu, which are the contr...

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Abstract

The invention relates to the technical field of phosphate and compound fertilizers, and discloses a treatment process for phosphate mineral acid method ore dressing and acid liquid produced in the process of beneficiation, including using sulfuric acid as a phosphate rock purifying agent to remove magnesium, and filtering the magnesium removal slurry to obtain a solid The phase is purified phosphate rock, which is used to produce phosphoric acid. The filtrate is neutralized by adding liquid ammonia to obtain a precipitate. The solid substance obtained after filtration is magnesium ammonium phosphate. The crystallized substance obtained after the filtrate is concentrated is ammonium sulfate, and finally compound fertilizer is prepared. The process of the invention can effectively remove metal oxides such as magnesium in the phosphate rock, and solves the problem that the acid hydrolysis purification solution is difficult to handle.

Description

technical field [0001] The invention relates to the technical field of phosphate compound fertilizers, in particular to a treatment process and application of acid solution produced in the process of beneficiation of phosphate rock by acid method and the beneficiation process. Background technique [0002] The grade of phosphate rock in China is relatively poor. The rich ore phosphate rock is only 1.6 billion tons, accounting for 9% of the total phosphate rock, and is mainly distributed in Guizhou and Hubei provinces, and the remaining 90% are medium and low-grade phosphate rock. Therefore, most of the phosphate rocks in China must be beneficiated and enriched to meet the needs of phosphoric acid and high-concentration phosphate compound fertilizer production. Among many beneficiation processes, the flotation method has been widely used due to its strong adaptability, high separation efficiency, and simple process, and has become the most effective beneficiation technology....

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C05G1/00
Inventor 李秉政张儒全瓦吉姆尼古拉刘卫平
Owner SHANDONG HONGRI ACRON CHEM
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