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Cement with inorganic additive

A technology of inorganic additives and cement, applied in the field of cement with inorganic additives, can solve the problems of large energy consumption and long processing cycle, and achieve the effects of fast drying speed, good wettability, and good flow viscosity

Inactive Publication Date: 2014-10-08
CHENGDU XINZHU ZHUANBO ENVIRONMENTAL PROTECTION TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Or the processing cycle is long, or consumes a lot of energy

Method used

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Embodiment

[0047] The cement with inorganic additives has the following weight ratio: 70-75 parts by weight of portland cement clinker, 5-10 parts by weight of inorganic additives, and 15-20 parts by weight of gypsum powder. Preferably, the weight ratio is: 72 parts by weight of Portland cement clinker, 8 parts by weight of inorganic additives, and 16 parts by weight of gypsum powder. Described inorganic additive is made by following method:

[0048] a Adjust the moisture content of the sludge to 60-70%,

[0049] b. Low-temperature pyrolysis of the sludge obtained in a. The temperature of the pyrolysis is 200-450°C, and the pyrolysis gas is collected.

[0050] c. Heat the pyrolysis residue after the treatment in step b to 1300~1500°C to burn the organic matter in the sludge to obtain the inorganic additive.

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Abstract

The invention discloses a cement with an inorganic additive. The cement with an inorganic additive comprises, by weight, 70-75 parts of Portland cement clinker, 5-10 parts of the inorganic additive and 15-20 parts of gypsum powder. The utilization of a sludge processing byproduct to prepare cement realizes recycling. The cement has good flow viscosity and excellent adhesion performance, does not downward flow or depress, has good wellability and has a fast drying speed. The cement has the advantages of weatherability, excellent temperature resistance, high bonding strength and low cost.

Description

technical field [0001] The invention belongs to the field of environmental protection, and in particular relates to cement with inorganic additives. Background technique [0002] Sludge is the product of sewage treatment, which is an extremely complex heterogeneous body composed of organic debris, bacterial cells, inorganic particles, colloids, etc. The main characteristics of sludge are high water content (up to 99%), high content of organic matter, easy to rot and smell, and the particles are finer, the specific gravity is smaller, and it is in a colloidal liquid state. It is a thick substance between liquid and solid, which can be transported by pump, but it is difficult to separate solid and liquid by sedimentation. [0003] Sludge refers to the sediment, particulate matter and floating matter produced when wastewater is treated by physical methods, chemical methods, physical chemical methods and biological methods. Sludge generally refers to thick matter between liqui...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B7/04
Inventor 陈华王小龙马长华曾世明陈圩净
Owner CHENGDU XINZHU ZHUANBO ENVIRONMENTAL PROTECTION TECH
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