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Method for preparing ceramsite by utilizing water treatment agent polyaluminium chloride residue

A polyaluminum chloride waste slag and water treatment agent technology, applied in applications, household utensils, clay products, etc., can solve the problems that cannot be fully realized, and achieve the effect of simple steps, easy industrialization, and rough surface

Active Publication Date: 2019-03-08
河南省福可思环保科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the above methods all need to add new chemical components or use new resources to the polyaluminum chloride production residue, and cannot fully realize the concept of "treating waste with waste".

Method used

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  • Method for preparing ceramsite by utilizing water treatment agent polyaluminium chloride residue

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] This embodiment provides a method for producing ceramsite by utilizing waste residue of water treatment agent polyaluminum chloride, such as figure 1 As shown, it specifically includes the following steps:

[0042] DeCl - Treatment Utilize the decomposer to carry out water elution of Cl - Treatment and use of lye for deCl - treatment, get off Cl - Treatment liquid and mixed mud; the mass percent concentration of the lye is 10%; the lye is a sodium hydroxide solution; the decompelling device is a hydropulper;

[0043] Static stratification The mixed mud is subjected to static sedimentation and stratification treatment to obtain a mixture containing bottom particles, middle layer particles and upper layer mud;

[0044] Waste slag separation: Separating the middle layer particles and the upper layer mud sequentially from the mixture containing the bottom layer particles, middle layer particles and upper layer mud; the upper layer mud is filtered to obtain a mud cake; ...

Embodiment 2

[0048] This embodiment provides a method for producing ceramsite by utilizing waste residue of water treatment agent polyaluminum chloride, such as figure 2 As shown, it specifically includes the following steps:

[0049] DeCl - Firstly, the water treatment agent polyaluminum chloride waste slag is roughly selected to obtain the water treatment agent polyaluminum chloride waste slag with a particle size greater than 15mm and the water treatment agent polyaluminum chloride waste slag with a particle size less than 15mm; The water treatment agent polyaluminum chloride waste slag with a particle size greater than 15mm is crushed into a water treatment agent polyaluminum chloride waste slag with a particle size less than 15mm, and then the water treatment with a particle size of less than 15mm after rough selection and crushing is performed using a decomposer. The waste slag of polyaluminum chloride was washed with water for the first time in sequence - Treatment, alkaline elut...

Embodiment 3

[0055] This embodiment provides a method for producing ceramsite by utilizing waste slag of polyaluminum chloride, a water treatment agent, the steps of which are roughly the same as those in Example 2, except that:

[0056] In this embodiment, the mass-number ratio of mud cake to biochemical sludge and fly ash is 85:10:5; the temperature for firing the pellets to be fired is 1300°C, and the firing time is 30min.

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Abstract

The invention provides a method for preparing ceramsite by utilizing water treatment agent polyaluminium chloride residue. The method comprises the following steps: performing dechlorinating treatmenton the water treatment agent polyaluminium chloride to obtain dechlorinated treating fluid and mixed slurry, and treating the mixed slurry in the manner of static settlement and screening to obtain bottom-layer grains, middle-layer grains and upper-layer slurry; filter-pressing clear liquor from the upper-layer slurry to obtain a filter cake; granulating by mixing the filter cake, biochemical sludge and coal ash at a mass ratio of (80-100):(0-20):(0-20) to obtain a to-be-burned granule; burning the to-be-burned granule under the temperature of 1000 DEG C-1300 DEG C; and cooling to room temperature to obtain the ceramsite. The internal tissue of the ceramsite prepared by the method is uniform; the water treatment agent polyaluminium chloride residue resource is fully utilized while the problem of environmental pollution caused by random stacking of biochemical sludge is solved; and the heat of combustible components in the biochemical sludge is also utilized. The method has simple andconvenient steps and is easy for industrial popularization.

Description

technical field [0001] The invention relates to the field of water purifiers, in particular to a method for preparing ceramsite by utilizing polyaluminum chloride waste residue of a water treatment agent. Background technique [0002] Ceramsite is a lightweight aggregate produced by foaming in a rotary kiln. It has a spherical shape, a smooth and hard surface, and a honeycomb shape inside, with the characteristics of low density, low thermal conductivity and high strength. In the refractory industry, ceramsite is mainly used as aggregate of heat-insulating refractory materials, ceramsite concrete, ceramsite filter material, etc. According to the source of raw materials, ceramsite can be divided into bauxite ceramsite sand, clay ceramsite, shale ceramsite, garbage ceramsite, coal gangue ceramsite, biological sludge ceramsite, river bottom sand ceramsite, fly ash According to the strength, ceramsite can be divided into high-strength ceramsite and ordinary ceramsite; accordin...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B38/00C04B33/135C04B33/132C04B33/13
CPCC04B33/13C04B33/132C04B33/1321C04B33/1352C04B38/009C04B2235/6567Y02P40/60
Inventor 焦猛焦天伟刘松涛
Owner 河南省福可思环保科技有限公司
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