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Method for preparing brick material of wall body with sludge compound mineralized refuse

A technology for mineralizing garbage and sludge, which is applied in chemical instruments and methods, dehydration/drying/concentrated sludge treatment, solid separation, etc., can solve the difficulty of industrialization and water content of molding wall bricks prepared by blending sludge The floating range is not large, which affects the strength of the sintered product, and achieves the effects of good homogenization, light weight and good heat preservation

Active Publication Date: 2018-12-07
XIAN RES & DESIGN INST OF WALL & ROOF MATERIALS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In recent years, the use of sludge blending to prepare sintered products has been practiced in various regions. The main contradiction encountered is the contradiction between the amount of sludge and the water content of sludge. Due to the special properties of sludge, the sludge after drying The mud is dense and has great particle elasticity, so it is not suitable to be mixed evenly with other materials. In the interior of sintered products, free sludge particles often exist alone, which seriously affects the strength of sintered products. Since the floating range of water content in brick making is not large, Therefore, the amount of water content sludge blending cannot be increased. Under the constraints of these problems, it has been difficult to industrialize the preparation of wall bricks by blending sludge

Method used

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  • Method for preparing brick material of wall body with sludge compound mineralized refuse
  • Method for preparing brick material of wall body with sludge compound mineralized refuse
  • Method for preparing brick material of wall body with sludge compound mineralized refuse

Examples

Experimental program
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Effect test

Embodiment 1

[0069] The preparation method of the wall brick of the present embodiment comprises the following steps:

[0070] Step 1. Sorting and processing the mineralized garbage to obtain mineralized garbage powder with a particle size not greater than 3mm, and the water content of the mineralized garbage powder is not greater than 10wt%;

[0071] Step 2, processing the sludge to obtain dried sludge powder;

[0072] Step 3. Mix the mineralized garbage powder obtained in step 1 and the dried sludge powder obtained in step 2, put them into a horizontal homogenizer for homogenization, and then add ingredients to the homogenized material to obtain a mixed The mixed material is sent into the mixer and added with water for the first stirring to obtain a primary mixed material; the mixed material is shale and coal gangue; the mass content of mineralized garbage powder in the mixed material is 30% , the mass content of the sludge material is 30%, and the mass content of the blending ingredien...

Embodiment 2

[0108] The preparation method of the wall brick of the present embodiment comprises the following steps:

[0109] Step 1. Sorting and processing the mineralized garbage to obtain mineralized garbage powder with a particle size not greater than 3 mm, and the water content of the mineralized garbage powder is 9 wt %;

[0110] Step 2, processing the sludge to obtain dried sludge powder;

[0111] Step 3. Mix the mineralized garbage powder obtained in step 1 and the dried sludge powder obtained in step 2, put them into a horizontal homogenizer for homogenization, and then add ingredients to the homogenized material to obtain a mixed material, and then the mixture is sent into the mixer to add water for the first time to stir, to obtain a primary mixture; the mixed material is sandstone; the mass content of mineralized garbage powder in the mixture is 40%, and the sludge The mass content of the material is 20%, and the mass content of the blending ingredients is 40%; the water cont...

Embodiment 3

[0132] The preparation method of the wall brick of the present embodiment comprises the following steps:

[0133] Step 1. Sorting and processing the mineralized garbage to obtain mineralized garbage powder with a particle size not greater than 3 mm, and the water content of the mineralized garbage powder is 5 wt %;

[0134] Step 2, processing the sludge to obtain dried sludge powder;

[0135] Step 3. Mix the mineralized garbage powder obtained in step 1 and the dried sludge powder obtained in step 2, put them into a horizontal homogenizer for homogenization, and then add ingredients to the homogenized material to obtain a mixed material, and then the mixture is sent into the mixer to add water and stir for the first time to obtain a primary mixture; the mixed ingredients are shale, coal gangue and sandstone; the mass content of mineralized garbage powder in the mixture is 35%, the mass content of the sludge material is 25%, and the mass content of the blending ingredients (th...

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Abstract

The invention discloses a method for preparing a brick material of a wall body with sludge compound mineralized refuse. The method comprises the following steps: homogenizing mineralized refuse powderand dried sludge powder in a horizontal homogenizer; adding a doping material, and mixing to obtain a mixed material; stirring the mixed material for three times, aging twice and extruding once to obtain a raw brick; and finally drying the raw brick in a drying kiln, and sintering and molding in a roasting kiln to obtain the brick material of a wall body. The brick material of a wall body sintered by the dried sludge powder, the mineralized refuse powder and the doping material has performance in conformity with national standard, the comprehensive resource utilization performance of sludge and mineralized waste can be improved, and the sludge homogenizing problem can be solved. The preparation method is simple in process and is favorable to popularization.

Description

technical field [0001] The invention belongs to the technical field of building materials, and in particular relates to a method for preparing wall bricks from sludge compounded with mineralized waste. Background technique [0002] Mineralized waste refers to the general term for a kind of non-toxic and harmless waste formed by domestic waste that can be stabilized after several years of biodegradation in landfills. After 8-10 years of landfill waste (more than 10-15 years in the northern region), the easily degradable substances in it will be completely degraded, and the final content will be reduced to less than 5%, and the amount of leachate and gas will be little or no. The surface settlement is very small (less than 1cm / a), it can be considered that the landfill has reached stabilization at this time, and the garbage at this time can be called mineralized garbage. This garbage can be mined and utilized. [0003] Municipal sludge refers to the solid waste generated dur...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B33/132C04B38/06C02F11/12B07B1/46B07B1/26
CPCB07B1/26B07B1/46B07B1/4609C02F11/12C04B33/132C04B33/1321C04B38/0665Y02P40/60
Inventor 权宗刚唐宝权宋心梁栋
Owner XIAN RES & DESIGN INST OF WALL & ROOF MATERIALS CO LTD
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