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Method for preparing barium metaphosphate by decomposing barite through ammonium dihydrogen phosphate

A technology for producing ammonium dihydrogen phosphate and barium metaphosphate, which is applied in chemical instruments and methods, phosphorus compounds, inorganic chemistry, etc., can solve problems such as environmental pollution, high production cost, and affect the ecological environment, and achieves reduction of production costs and production costs. Convenience and simple method

Pending Publication Date: 2021-06-01
QIANNAN NORMAL UNIV FOR NATTIES
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The above three methods have high production costs and complicated production processes. At the same time, the production process will pollute the environment and affect the ecological environment.

Method used

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  • Method for preparing barium metaphosphate by decomposing barite through ammonium dihydrogen phosphate
  • Method for preparing barium metaphosphate by decomposing barite through ammonium dihydrogen phosphate
  • Method for preparing barium metaphosphate by decomposing barite through ammonium dihydrogen phosphate

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Embodiment 1

[0019] Embodiment 1: A kind of method that adopts ammonium dihydrogen phosphate to decompose barite to make barium metaphosphate, according to barite and ammonium dihydrogen phosphate mass ratio is 1: 2.0 to carry out material preparation, after two kinds of raw materials are uniformly mixed, in 500 Calcined at high temperature for 3.0h, the product obtained is barium metaphosphate.

Embodiment 2

[0020] Embodiment 2: A kind of method that adopts ammonium dihydrogen phosphate to decompose barite to make barium metaphosphate, according to barite and ammonium dihydrogen phosphate mass ratio is 1:2.0 to carry out material preparation, after two kinds of raw materials are evenly mixed, at 600 Calcined at high temperature for 2.5h, the product obtained is barium metaphosphate.

Embodiment 3

[0021] Embodiment 3: A kind of method adopting ammonium dihydrogen phosphate to decompose barite to make barium metaphosphate, according to barite and ammonium dihydrogen phosphate mass ratio is 1:2.0 to carry out material preparation, after two kinds of raw materials are evenly mixed, at 700 Calcined at high temperature for 2.5h, the product obtained is barium metaphosphate.

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Abstract

The invention discloses a method for preparing barium metaphosphate by decomposing barite through ammonium dihydrogen phosphate, which comprises the following steps of: preparing barite and ammonium dihydrogen phosphate according to the mass ratio of 1: 2.0 to 1: 2.6, uniformly mixing the two raw materials, and calcining the mixture at the high temperature of 500-800 DEG C for 2.5-3.5 hours to obtain a product, namely barium metaphosphate. The invention provides a novel method for directly converting barium sulfate into barium metaphosphate by directly adopting barite as a raw material without a barium carbonate or barium hydroxide preparation stage by directly utilizing the thought of natural barite resources. According to the method, ammonium dihydrogen phosphate and barite are mixed and calcined at a high temperature, and barium metaphosphate can be produced. The whole method is simple, the production is convenient and fast, and the production cost of barium metaphosphate is reduced. The environment is not polluted.

Description

technical field [0001] The invention relates to a method for barium metaphosphate, in particular to a method for preparing barium metaphosphate by using ammonium dihydrogen phosphate to decompose barite. Background technique [0002] Barite is a non-metallic mineral with barium sulfate as the main component. China's barite reserves rank first in the world. It is an advantageous mineral product for export in my country. Guizhou barite has good mineral quality and rich mineral resources. Barite reserves account for 8% of the province, much higher than the 85% of BaSO in Guizhou Province 4 average level. However, due to the low grade of most barite raw ores, there are not many direct utilization channels. For example, barite is mainly used as a weighting agent for oil and gas drilling, accounting for about 85% of the total consumption; or used as a filler in the paint industry. In addition, in the field of chemical industry, barite can be made into barium carbonate, barium chl...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B25/44
CPCC01B25/44C01P2002/72
Inventor 周骏宏唐尚金何丹马糯文灿刘严张瑶罗孝春朱昌鸿黄志强
Owner QIANNAN NORMAL UNIV FOR NATTIES
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