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Integrated method for preparing potassium fertilizer from Bayan Obo potassium-rich slate

A technology of potassium-rich slate and an integrated method, which is applied to potash fertilizers, inorganic fertilizers, fertilization devices, etc., can solve the problems of many miscellaneous ores, and achieve the effects of simple equipment process, low investment, and low production cost

Inactive Publication Date: 2014-01-29
INNER MONGOLIA UNIV OF SCI & TECH
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Problems solved by technology

[0011] However, in the Baiyun Obo area, the rich deck rocks are accumulated in the form of waste rocks, and there are many miscellaneous ores. Therefore, it is necessary to take certain measures to strip the ores with low potassium content before bioleaching. a bottleneck problem of

Method used

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Embodiment Construction

[0044] The invention provides an integrated method for preparing potassium fertilizer from Baiyun Obo potassium-rich slate, the method comprising the following steps:

[0045] (1), X-ray selection of potassium-rich slate;

[0046] (2), microwave pretreatment;

[0047] (3) Leaching of microorganisms.

[0048] Specifically, the selection steps of X-rays for potassium-rich slate are:

[0049](1) After the raw ore is crushed, the ore particles with a particle size of 50-150 mm are screened out and sent to the X-ray sorting machine;

[0050] (2) The X-ray sorting machine sorts out the potassium-rich ore grains with a potassium percentage higher than 8% under the control of a microcomputer; the ore flow rate is 10-50 tons / hour;

[0051] (3) The potassium-rich ore is ground to 150-200 mesh, sieved and transported to the microwave processor.

[0052] Microwave pretreatment steps are:

[0053] (1) Microwave treatment of water:

[0054] Put the water into the microwave reactor, th...

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Abstract

The invention discloses an integrated method for preparing a potassium fertilizer from Bayan Obo potassium-rich slate. According to the method, potassium is extracted from potassium slate by using X-ray selection, microwave pretreatment and microbial leaching, and then, the potassium fertilizer is subjected to integrated preparation, so that compared with traditional fertilizer production, the investment is small, the cost is low, the economic benefit is good, and no pollution is caused. Compared with untreated microbial leaching potassium fertilizer preparation, due to the combination of microwave pretreatment and microbial leaching, the potassium fertilizer preparation efficiency is higher, and the potassium fertilizer preparation cycle is shorter. According to the method, a steeling tailing pond and the potassium-rich slate of Bayan Obo regions can be reasonably utilized, and the waste is changed into the valuable, so that the method is beneficial to the development of cyclic economy of China.

Description

[0001] technical field [0002] The present invention relates to an integrated method for preparing potassium fertilizer from Baiyun Obo potassium-rich slate, specifically, using Baiyun Obo potassium-rich slate as raw material, using X-ray sorting, microwave pretreatment, and microbial leaching to extract potassium from potassium slate. . Background technique [0003] Potassium is a basic element in the life activities of animals and plants, and plays an important role in the growth of crops. my country is a large agricultural country, and the demand for potassium fertilizer is large, but the soluble potassium resources that are easy to use in our country are extremely scarce. According to reports, my country's potash fertilizer production accounts for only 0.34% of the world's total, while consumption accounts for 14.7%. Potash fertilizer production is insufficient, and currently it mainly relies on imports. [0004] However, my country's insoluble potassium mineral resou...

Claims

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Application Information

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IPC IPC(8): C05D1/00C05G1/00
Inventor 郑春丽王建英杨文焕张雪峰陈敏洁姜志艳邓攀博王亚琴
Owner INNER MONGOLIA UNIV OF SCI & TECH
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