Novel preparation method of soilless culture medium

A soilless culture and matrix technology, which is applied to ceramic products, other household utensils, household utensils, etc., can solve the problems of poor water retention, environmental pollution, etc., and achieve the effects of simple construction, reduced production costs, and large capacity

Active Publication Date: 2012-06-20
SHANDONG UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The use of organic plastic or organic foam has environmental pollution problems, and the use of perlite and granite small stone rice or the use of waste burnt bricks into granules has problems such as poor water retention.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0010] (1) Ingredients: Mix 10wt% of glass powder with a particle size of 0.5μm, 1wt% of sodium fluorosilicate, 80wt% of waste ceramic tile powder and 9wt% of coal powder, with a ratio of material: ball ratio of 1:1 Put into a ball mill and mix and grind for 3 hours to form ceramic powder;

[0011] (2) Firing: The above-mentioned ceramic powder is fired at 1100°C for 1 hour, and then crushed to obtain a soilless culture substrate.

[0012] The ingredients used in the experiment are all industrial waste.

[0013] After inspection, the technical indicators of the prepared product are: the average pore diameter is about 0.3mm, and the bulk density is 0.4g / cm 3 .

Embodiment 2

[0015] (1) Ingredients: Mix 20wt% of glass powder with a particle size of 150μm, 8wt% of sodium silicate, 52wt% of coal gangue powder and 20wt% of crop straw fine powder. Mix and grind in a ball mill for 3 hours to form ceramic powder;

[0016] (2) Firing: The above-mentioned ceramic powder was fired at 950°C for 2 hours, and then crushed to obtain a soilless culture substrate.

[0017] The ingredients used in the experiment are all industrial waste.

[0018] After inspection, the technical indicators of the prepared product are: the average pore diameter is about 0.8mm, and the bulk density is 0.2g / cm 3 .

Embodiment 3

[0020] (1) Ingredients: Mix 30wt% of glass powder with a particle size of 300μm, 15wt% of sodium fluorosilicate, 25wt% of red mud powder and 30wt% of plant straw fine powder. Mix and grind in a ball mill for 3 hours to form ceramic powder;

[0021] (2) Firing: The above ceramic powder was fired at 600°C for 4 hours, and then crushed to obtain a soilless culture substrate.

[0022] The ingredients used in the experiment are all industrial waste.

[0023] After inspection, the technical indicators of the prepared product are: the average pore diameter is about 1.2mm, and the bulk density is 0.15g / cm 3 .

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Abstract

The invention relates to a novel preparation method of a soilless culture medium, which is characterized by comprising the following steps: mixing 10-30 wt% of 0.5-300 mu m glass powder, 1-15 wt% of cosolvent, 80-25 wt% of ceramic powder and 9-30 wt% of pore increasing agent, and grinding into a uniform powder mixture; and firing the powder mixture at 600-1100 DEG C for 1-4 hours, crushing and screening to obtain the soilless culture medium. The pore increasing agent is one or mixture of coal powder, crop straw fine powder and herbal plant fine powder; the ceramic powder is one or mixture of coal gangue, red mud, polished brick waste and waste ceramic tile powder of which the particle size is 0.5-5 mu m; and the cosolvent is sodium fluosilicate or sodium silicate, or mixture of sodium fluosilicate or sodium silicate in any proportion. The pore size of the soilless culture medium can be controlled at 0.1-0.5mm; the pores are uniformly distributed inside and outside and form interlocking pores; and thus, the soilless culture medium has favorable water retention property.

Description

Technical field [0001] The present invention involves a new method of preparation of soil -free culture substrates, which is the field of porous ceramic preparation technology. Background technique [0002] The soil -free culture substrate is mainly used in biological cultivation and growth. Generally, organic plastic or organic foam is used. Symphony and granite small stone rice are distributed in a certain proportion, or waste brick bricks are broken into granular shapes.The use of organic plastic or organic foam has environmental pollution problems. Snowy rice rice is used in perlite and granite, or the use of waste -burnt bricks into granular has poor water retention. Invention content [0003] The purpose of the present invention is to provide a new type of preparation method that can overcome the above -mentioned defects, uniform distribution inside and outside of the aperture, uniform distribution, non -pollution, non -harmful substance exudation, excellent use of perform...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B38/06
Inventor 易维明唐竹兴
Owner SHANDONG UNIV OF TECH
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