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Sintered brick suitable for being prepared from waste paper and paper-making sludge and preparation method of sintered bricks

A technology for making paper and sintering bricks from waste paper, which is applied in applications, clay products, household appliances, etc., can solve the problems of high energy consumption, air pollution, groundwater resource pollution, etc., and achieves clay saving, less cracking and high yield Effect

Inactive Publication Date: 2015-03-18
蒋华
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  • Summary
  • Abstract
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Problems solved by technology

If incineration is used, it will not only pollute the atmosphere, but also consume a lot of energy; if it is filled up, it will pollute groundwater resources

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0031] 0.125 kg of sodium hypochlorite was mixed into 25 kg of waste paper sludge for pretreatment and dried to a moisture content of 50%. The resulting waste paper papermaking sludge, 85 kg of clay and 5 kg of crushed cinder were stirred with a twin-shaft mixer, then extruded and cut into pieces with a cutter to obtain bricks. After 7 days of natural air drying, it is sintered in a kiln. The temperature is normal temperature when entering the kiln, and then the temperature is raised to 900 ° C, sintered for 4 hours, and the temperature of the kiln exit is 50 ° C. The obtained sintered brick has a flat appearance and a standardized size. Randomly select 5 bricks from the obtained sintered bricks, and test them. Qualified * Refers to the GB5101-85 standard for fired bricks. According to GB5101-85, the average value of five blocks of compressive strength is ≥9.81MPa, and the minimum value of a single block is ≥5.89MPa, which is qualified if it reaches this value; the average ...

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Abstract

The invention relates to a sintered brick suitable for being prepared from waste paper and paper-making sludge and a preparation method of the sintered bricks. The preparation method comprises the following steps: 1) performing pretreatment on the waste paper and paper-making sludge with a bactericide; 2) mixing 70-85 parts by weight of clay, 10-25 parts by weight of waste paper and paper-making sludge after pretreatment and 5-10 parts by weight of coal cinder; and 3) extruding the obtained mixture to form billets, cutting to form green bricks, drying, and then sintering the green bricks at the sintering temperature of 1000-1100 DEG C.

Description

technical field [0001] The invention relates to a sintered brick which is suitable for the sludge produced by waste paper making and a preparation method. Background technique [0002] my country's construction industry has a huge demand for sintered bricks. Conventional sintered bricks are made by sintering the excavated farmland clay, which causes a large loss of soil resources and the phenomenon of destroying fields is quite serious. [0003] Paper has been widely used in various fields. However, a large amount of sludge produced by the paper industry has brought serious pollution problems to the environment. With the increasingly strict national environmental protection policies, how to deal with the huge amount of sludge produced by the paper industry every year has become more and more the focus of attention. If incineration is used, it will not only pollute the atmosphere, but also consume a lot of energy; if it is filled up, it will pollute groundwater resources. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B33/132C04B33/22C04B33/32
CPCY02P40/60
Inventor 蒋华
Owner 蒋华
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