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Process for synergistically producing calcium aluminate powder by utilizing power station boiler

A power plant boiler, calcium aluminate powder technology, applied in the preparation of calcium aluminate, alkaline earth metal aluminate/alumina/aluminum hydroxide, chemical industry, etc., can solve the problem of unstable temperature field of rotary kiln and long product production cycle , over-burning or under-burning of raw materials, etc., to achieve the effects of stable production process parameters, improved energy utilization efficiency, and fast reaction speed

Active Publication Date: 2020-04-03
张保森
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The traditional production process equipment of calcium aluminate powder is a rotary kiln, which requires large investment, complex process, long production cycle, low energy utilization rate, high cost of desulfurization and denitrification, unstable temperature field of rotary kiln, and over-burning or under-burning of raw materials

Method used

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  • Process for synergistically producing calcium aluminate powder by utilizing power station boiler

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Embodiment 1 (using pulverized coal boiler)

[0024] A process for producing calcium aluminate powder using a utility boiler, comprising the following steps:

[0025] (1) A microcomputer batching device is used to configure raw materials, and the raw materials include the following components by weight: 50%~70% of coal, 10%~20% of calcium oxide, 20%~30% of aluminum oxide, iron oxide (accounting for than 1%);

[0026] (2) After the raw materials are mixed, they are conveyed to the crusher (mill) by a belt for crushing and powdering;

[0027] (3) The crushed powdery material is sent to the storage bin (homogenization bin) through the material conveyor;

[0028] (4) The material passes through the powder selection screen of the pulverizing device to control the particle size of the material at 500~1000 mesh, and is sent to the pulverized coal boiler for combustion through the boiler feeding device, and the temperature is controlled at 1200~1300°C;

[0029] (5) The fly a...

Embodiment 2

[0031] Embodiment 2 (using a fluidized bed boiler)

[0032] A process for producing calcium aluminate powder using a utility boiler, comprising the following steps:

[0033] (1) Use a microcomputer batching device to configure raw materials, the raw materials include the following components by weight: 50%~70% of coal, 10%~20% of calcium oxide, 20%~30% of alumina, gypsum (proportion 1%);

[0034] (2) After the raw materials are mixed, they are conveyed to the crusher (mill) by a belt for crushing and powdering;

[0035] (3) The crushed powdery material is sent to the storage bin (homogenization bin) through the material conveyor;

[0036] (4) The material passes through the sieve of the crusher to control the particle size of the material at 0~13mm, and is sent to the fluidized bed for combustion through the boiler feeding device, and the temperature is controlled at 850~1050°C;

[0037] (5) The fly ash after combustion is collected by the dust collection device and enters ...

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Abstract

The invention discloses a process for synergistically producing calcium aluminate powder by utilizing a power station boiler. According to the process, a microcomputer batching device is adopted to prepare raw materials, and the raw materials comprise the following components in percentage by weight: 50-70% of coal, 10-20% of calcium oxide and 20-30% of aluminum oxide; the mixed raw materials areconveyed to a crusher (pulverizer) by a belt for crushing and pulverizing; crushed powdery materials are conveyed to a storage bin (homogenizing bin) through a material conveyor; materials are fed into the power station boiler through a boiler feeding device for combustion; fly ash after combustion is collected by a dust collecting device and is introduced into a finished product warehouse. According to the invention, the characteristics of the power station boiler are fully utilized, and the fly ash is converted into a calcium aluminate powder product on the premise of well controlling the raw material ratio, the combustion temperature and other process indexes and not influencing power generation; the production cost of calcium aluminate powder is greatly reduced, and the energy utilization efficiency is improved.

Description

technical field [0001] The invention belongs to the technical field of preparation of calcium aluminate powder, and in particular relates to a process for synergistically producing calcium aluminate powder by utilizing power station boilers. Background technique [0002] The traditional production process equipment of calcium aluminate powder is a rotary kiln, which has large investment, complex process, long production cycle, low energy utilization rate, high cost of desulfurization and denitrification, unstable temperature field of rotary kiln, and over-burning or under-burning of raw materials. Contents of the invention [0003] Aiming at the problems existing in the prior art, the present invention provides a process for synergistically producing calcium aluminate powder using power plant boilers, using power plant (station) boilers to convert fly ash into calcium aluminate powder while taking into account power generation, replacing Rotary kiln. [0004] In order to ...

Claims

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Application Information

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IPC IPC(8): C01F7/16
CPCC01F7/164Y02P20/10
Inventor 张保森
Owner 张保森