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Method for producing powdery monoammonium phosphate of T-shaped pulveriser

A technology of monoammonium phosphate and pulverizer, applied in phosphate, phosphorus oxyacid, grain treatment, etc., can solve the problems of polluting the environment, ash leakage from fans, etc. Effect

Inactive Publication Date: 2010-05-19
云南云天化股份有限公司三环分公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

As a result, dust leaks everywhere when the fan is turned on, polluting the environment

Method used

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  • Method for producing powdery monoammonium phosphate of T-shaped pulveriser
  • Method for producing powdery monoammonium phosphate of T-shaped pulveriser
  • Method for producing powdery monoammonium phosphate of T-shaped pulveriser

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Embodiment

[0020] The equipment for producing powdered monoammonium phosphate consists of feeder, mill, powder classifier, two cyclone powder collectors, fan, bag filter and connecting pipeline. Among them, the mill is the MTM160T medium-speed mill. The complete set of equipment is manufactured and provided by Shanghai Xizhi Electric Power Equipment Co., Ltd. The maximum design capacity is 9-13t / h, and the power of the main engine motor is 132kw. Originally designed and manufactured for metallurgy, mine grinding ore and other materials with high hardness, it can grind ore of HRC13.

[0021] Such as figure 1 As shown, the ammonium phosphate return material is evenly sent to the lower air duct of the main engine by the screw feeder with frequency conversion speed regulation, and enters the grinding chamber with the wind, and the ammonium phosphate entering the grinding chamber is between the grinding roller and the grinding ring. Grinding, the ground powder is brought to the classifier by...

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Abstract

The invention discloses a method for producing powdery monoammonium phosphate by a T-shaped pulveriser. The method comprises the following steps: taking the T-shaped pulveriser as a base, alternately removing three grinding rollers, setting a rear elevation angle of a perching knife in front of and corresponding to each grinding roller into 15-30 degrees; meanwhile, for improving operating environment, removing original matched bag type dust remover of the T-shaped pulveriser, and connecting a wind pipe to the cooling head part of a monoammonium phosphate device to lead air exhauster of the grinding machine to a dust remover of a cooling machine. The method applies the T-shaped pulveriser to the production of the powdery monoammonium phosphate for the first time, which not only obviously increases the output of the monoammonium phosphate, but also greatly improves presentation quality. The product has no hollow grains, low moisture and can not be agglomerated completely, the fineness is obviously improved; and moreover, the method greatly saves the maintaining and checking expense of the grinding machine and has a good application prospect.

Description

technical field [0001] The invention belongs to the technical field of chemical production equipment, and relates to crushing equipment in the production of powdery monoammonium phosphate, in particular to a method for improving a T-shaped pulverizer to make it more suitable for the production of powdery monoammonium phosphate. Background technique [0002] The production of monoammonium phosphate (MAP) is mostly carried out by tubular reactor technology. The liquid ammonia and concentrated phosphoric acid are neutralized and reacted. After the reaction, the reaction slurry is processed by spray drying, crushing, screening, cooling and other processes to obtain a powder product. Because monoammonium phosphate has the characteristics of easy agglomeration during rolling, most enterprises choose ring hammer crusher for impact crushing. However, due to the fine particle size and light weight of the material, the crushing efficiency is always low, and the amount of particle ret...

Claims

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Application Information

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IPC IPC(8): C01B25/28B02C15/08
Inventor 杨跃华赵剑波何利全胡彬解忠勇潘继斐彭继明
Owner 云南云天化股份有限公司三环分公司
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