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Production line and technology for preparing calcium aluminate powder through white mud

A technology of calcium aluminate powder and production line, which is applied in the preparation of calcium aluminate, alkaline earth metal aluminate/alumina/aluminum hydroxide, etc., can solve the problems of producing calcium aluminate powder, unable to use white mud, etc. Environment, good economic benefits, the effect of pollution control

Pending Publication Date: 2018-09-28
福建鼎盛元环保科技有限公司
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Problems solved by technology

[0009] The present invention provides a production line and process for preparing calcium aluminate powder by using white mud, and its main purpose is to overcome the defect that the prior art cannot use white mud to produce calcium aluminate powder

Method used

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  • Production line and technology for preparing calcium aluminate powder through white mud
  • Production line and technology for preparing calcium aluminate powder through white mud

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Embodiment Construction

[0033] Specific embodiments of the present invention will be described below with reference to the accompanying drawings.

[0034] refer to figure 1 and figure 2 . A production line for preparing calcium aluminate powder from lime mud, comprising feeding equipment 1, calcining equipment 2, dust removal equipment 3, coal supply equipment 4, combustion equipment 5, and cooling and grinding equipment 6. in,

[0035] The feeding equipment 1 includes a white mud slag silo 11 for accommodating white mud slag / calcium carbide slag, an aluminum raw material silo 12 for accommodating aluminum raw materials, and a crystal nuclei material for accommodating crystal nuclei. Bin 13, Jaw Crusher 14 for medium-sized crushing of bauxite or aluminum ash, fine crusher 15 for fine crushing of medium-sized crushed bauxite or aluminum ash, and fine crushing machine for fine crushing The second ball mill 16 for crushing the bauxite or aluminum ash after formula crushing into aluminum raw materia...

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Abstract

The invention discloses a production line and technology for preparing calcium aluminate powder through white mud. The technology includes the steps that 0.4-0.5 part by weight of white mud slag / carbide slag, 0.9-1.1 parts by weight of an aluminous raw material and 0.04-0.05 part by weight of crystal nuclein are sequentially conveyed in a stirring machine and mixed and stirred to be even; the mixture is conveyed into a rotary kiln and calcined for 20 min to 40 min till the temperature of the mixture is 900 DEG C to 1,100 DEG C; after calcining is ended, the temperature of the mixture is cooledto 300 DEG C to 400 DEG C through a cooling machine; after cooling is ended, the mixture is powdered through a first ball mill, and calcium aluminate powder is prepared. By means of the production line and technology, white mud can be eliminated, the local graceful natural-ecology human settlement environment is powerfully protected, the recycling speed of renewable resources is increased, the effects of turning waste into wealth and turning harm into good are achieved, pollution is governed, the environment is improved, occupied land resources are released, the beautiful environment can be created for persons, and the harmony and unity ecological environment between man and nature is promoted.

Description

technical field [0001] The invention relates to the field of waste recycling, in particular to a production line and a process for preparing calcium aluminate powder from white mud. Background technique [0002] There are two sources of white mud. One is that during the production of soda ash, a large amount of waste liquid will be produced in the process of making alkali with ammonia-soda method. The alkali residue produced after the waste liquid is filtered is commonly known as white mud. Another kind of black liquor produced in the papermaking and pulping production process is treated by alkali recovery technology, and lime is added to the green liquor for causticization reaction to obtain white sediment, which is white mud. The reaction of papermaking lime mud is as follows: [0003] Na 2 CO 3 + CaO+ H 2 O = 2NaOH + CaCO 3 ↓ [0004] Its main chemical components are: [0005] project CaO MgO Fe 2 o 3 al 2 o 3 SiO 2 burn ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01F7/16
CPCC01F7/164
Inventor 李生钉彭其雨魏四成林宝肖静郑发基李振佑林金花
Owner 福建鼎盛元环保科技有限公司
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