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Sintered ceramsite having water retaining function, and preparation method thereof

A technology of ceramsite and function, which is applied in the field of sintered ceramsite with water retention function and its preparation, which can solve the problems of limited service life of flower ceramsite, poor effect of water and fertilizer retention, and poor fixation effect of ceramsite, so as to achieve good water retention Effect, beneficial to plant growth, and the effect of improving resource utilization

Inactive Publication Date: 2019-08-09
GUANGDONG TSINGDA TONGKE ENVIRONMENTAL PROTECTION TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The patent with the publication number CN102503280A provides a spherical attapulgite flower ceramsite with water retention function, which is made of solid waste such as attapulgite clay tailings powder, diatomite tailings powder, sludge, and superabsorbent resin gel. Flower ceramsite with light weight, high strength, high water absorption rate and good water retention effect is prepared by using resin as raw material. However, because the super absorbent resin is an organic matter, it is easy to age and degrade, thus losing the water retention function, resulting in a limited service life of flower ceramsite.
In addition, the existing high water absorption ceramsite is mostly clay foamed ceramsite, with a bulk density of 300kg / m 3 Left and right, the bulk density is too light, and the fixing effect is not good; and the water-retaining ceramsite generally has poor fertilizer retention effect, and extreme phenomena such as plant fertilizer shortage or burning seedlings are prone to occur

Method used

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  • Sintered ceramsite having water retaining function, and preparation method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] A sintered ceramsite with water retention function, the ceramsite is prepared from the following raw materials in parts by weight: 100 parts of solid waste, of which fly ash accounts for 10%, coal gangue accounts for 70%, slag accounts for 10%, ceramic polishing Waste materials account for 10%; plasticizer 5 parts, of which kaolin accounts for 10%, montmorillonite accounts for 25%, chlorite accounts for 38%, ethyl cellulose accounts for 27%; water reducer 0.5 parts, of which lignosulfonic acid Sodium accounts for 43.5%, polycarboxylate superplasticizer accounts for 56.5%; water 30 parts.

[0029] The preparation method of the sintered ceramsite with water retention function in the present embodiment comprises the following steps:

[0030] (1) Take the solid raw material according to the raw material proportion, and mix it uniformly in a forced mixer to obtain the mixture;

[0031] (2) Pour the mixture obtained in step (1) into a disc granulator, and pour water into it ...

Embodiment 2

[0035] A sintered ceramsite with water retention function, the ceramsite is prepared from the following raw materials in parts by weight: 100 parts of solid waste, of which fly ash accounts for 32%, coal gangue accounts for 41%, slag accounts for 13%, ceramic polishing Waste materials accounted for 14%; pore formers accounted for 12 parts, of which carbon powder accounted for 19%, expanded perlite accounted for 15%, palygorskite accounted for 34%, sepiolite accounted for 32%; plasticizers accounted for 8 parts, of which kaolin accounted for 28.4% , montmorillonite accounted for 27.5%, polyvinyl acetate accounted for 30.5%, paraffin accounted for 13.6%; 1 part of water reducer, of which sodium lignosulfonate accounted for 16.5%, polycarboxylate superplasticizer accounted for 40.8%, SM high efficiency Water reducing agent accounts for 42.7%; water 24 parts.

[0036] The preparation method of the sintered ceramsite with water retention function in the present embodiment comprises...

Embodiment 3

[0042] A sintered ceramsite with water retention function, the ceramsite is prepared from the following raw materials in parts by weight: 100 parts of solid waste, of which fly ash accounts for 32%, coal gangue accounts for 35%, slag accounts for 16%, ceramic polishing Waste materials accounted for 17%; 22 parts of pore-forming agents, of which graphite accounted for 26%, vermiculite accounted for 12%, palygorskite 31%, sepiolite accounted for 24%; plasticizers 11 parts, of which kaolin accounted for 32.5%, Mongolian Destonening accounted for 22.6%, chlorite accounted for 33.4%, polyethylene cellulose accounted for 11.5%; water reducing agent 1.6 parts, of which sodium lignosulfonate accounted for 11.2%, polycarboxylate superplasticizer accounted for 32.5%, SM high-efficiency Water reducing agent accounts for 56.3%; water 19 parts.

[0043] The preparation method of the sintered ceramsite with water retention function in the present embodiment comprises the following steps:

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Abstract

The invention relates to sintered ceramsite having water retaining function, and a preparation method thereof, wherein the ceramsite is prepared from the following raw materials by weight: 100 parts of solid waste, 0-30 parts of a pore forming agent, 5-15 parts of a plasticizer, 0.5-2 parts of a water reducing agent, and 15-30 parts of water. The preparation method comprises: weighing solid raw materials according to a certain ratio, and mixing uniformly in a forced stirrer to obtain a mixture; pouring the mixture into a disc granulator, pouring water according to a certain ratio, and granulating; placing the granules in an oven, and drying; and screening, and sintering under a certain firing system to obtain planting sand. According to the present invention, the sintered ceramsite havingwater retaining function uses the silicon-aluminum-component-rich solid waste as the raw material, has a water absorption rate of about 30-70%, and has good water retention effect, wherein the pores of the ceramsite are small, and the water in the pores is stored in the forms of hygroscopic water, membranous water and capillary water so as to increase the effective amount of the water, such that the sintered ceramsite of the present invention can be used as the planting ceramsite so as to provide a certain nutrition and moisture for crops.

Description

technical field [0001] The invention relates to the field of sintered ceramsite, in particular to sintered ceramsite with water retention function and a preparation method thereof. Background technique [0002] With the rapid development of social economy and the over-exploitation of soil by humans, there is less and less arable soil. The reduction of arable soil will lead to a decline in crop yields, which will seriously affect economic development. Because of its porous structure, ceramsite has a certain function of water and fertilizer retention, so it can be used as a cultivation substrate instead of soil to grow crops. With the progress of industrial production, a large amount of solid waste is produced, such as fly ash, coal gangue, tailings, slag, etc., and its long-term stacking causes waste of resources on the one hand, and pollutes and harms the environment on the other hand. Human health, so it is very necessary to provide new ways for the resource utilization of...

Claims

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Application Information

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IPC IPC(8): C04B38/08C04B38/06C04B33/13C04B33/132C04B33/135C04B33/138
CPCC04B33/1305C04B33/131C04B33/132C04B33/1324C04B33/1352C04B33/138C04B35/6303C04B35/632C04B35/6325C04B35/63416C04B35/63488C04B35/6365C04B38/009C04B2235/96C04B38/0074C04B38/08C04B38/068Y02P40/60
Inventor 陈春梅张宏生贺新明胡毅耕
Owner GUANGDONG TSINGDA TONGKE ENVIRONMENTAL PROTECTION TECH CO LTD
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