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Process and production line for producing quicklime and aluminum hydroxide from waste

A technology of aluminum hydroxide and quicklime, applied in the direction of alumina/aluminum hydroxide, etc., to achieve good economic benefits, pollution control, and broad market growth.

Pending Publication Date: 2018-09-18
福建鼎盛元环保科技有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0012] The present invention provides a process and production line for producing quicklime and aluminum hydroxide by utilizing wastes. Disadvantages of Aluminum Hydroxide

Method used

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  • Process and production line for producing quicklime and aluminum hydroxide from waste
  • Process and production line for producing quicklime and aluminum hydroxide from waste

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Embodiment Construction

[0032] Specific embodiments of the present invention will be described below with reference to the accompanying drawings.

[0033] refer to figure 1 , figure 2 . A production line for producing quicklime and aluminum hydroxide by using waste, including quicklime producing equipment 1, aluminum hydroxide producing equipment 2, and recycled material producing equipment 3. in,

[0034] Quicklime production equipment 1 includes a rotary kiln 11 for calcining lime mud or recovering calcium carbonate, and a quicklime silo 12 connected to the discharge end of the rotary kiln 11; the specific use is: to transfer lime mud or recovered calcium carbonate to the rotary kiln 11 for Calcining at a temperature of about 1000°C for about 30 minutes to obtain quicklime, then convey the quicklime out and cool it down to about 300°C through a cooler, and put it in the quicklime silo 12 for storage. The quicklime can be directly packaged and sold, or can be continuously used to produce Recycl...

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Abstract

The invention discloses a process and a production line for producing quicklime and aluminum hydroxide from waste. The production line comprises quicklime production equipment, aluminum hydroxide production equipment and reclaimed material production equipment. Waste such as white mud, waste alkali and aluminum ash are utilized comprehensively to generate quicklime and aluminum hydroxide with wideapplication ranges, thereby turning waste into treasure, turning harm into benefit, controlling pollution, improving the environment and releasing occupied land resources. Moreover, a beautiful environment can be created for people, and the realization of harmonious and unified ecological environment between human beings and the nature is promoted. Furthermore, the process and the production linehave good economic benefits and broad market growth.

Description

technical field [0001] The invention relates to the field of waste recycling, in particular to a process and production line for producing quicklime and aluminum hydroxide from waste. 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 bur...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B2/10C01F7/02
CPCC01F7/02C04B2/10
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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