Waterproof and breathable powdered carbon and preparation method thereof

Abstract

The invention belongs to the technical field of biological carbon black, and relates to waterproof and breathable powdered carbon and a preparation method thereof. The waterproof and breathable powdered carbon is prepared from the biological carbon black as a main raw material; the particle sizes of the waterproof and breathable powdered carbon are greater than 200 meshes; and the surface tension of each particle is 20-21dyn / cm<2> (under the condition that the temperature is 24-32 DEG C) and is smaller than the surface tension of 72dyn / cm<2> (at a room temperature) of water. The waterproof and breathable powdered carbon is available in raw material, the preparation process is simple and convenient, the cost is low, the efficiency is high, waterproof and breathable sand can be completely replaced, and the waterproof and breathable powdered carbon accords with the environment-friendly development trend and the idea of circular economy development and has good economic and social benefits.

Description

technical field [0001] The invention belongs to the technical field of biological black carbon, and is a novel inorganic water-blocking material for desert and saline-alkali land control and environmental protection applications. Background technique [0002] 1. People call deserts and saline-alkali land scars on the earth, and others say they are cancers of the earth, which are difficult to cure. According to my country's incomplete statistics, it has reached 1.689 million square kilometers, accounting for 17.6% of the country's land area, and is expanding at a rate of 2,460 square kilometers per year. Secondly, according to the incomplete statistics of UNESCO and FAO, the area of ​​saline-alkali land in the world is 954.38 million hectares, of which 99.13 million hectares is in my country. The control of deserts and saline-alkali land has already risen to the relevant national level. [0003] 2. Biological black carbon technology has attracted extensive attention from adv...

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Problems solved by technology

[0006] 3. my country’s research on the relationship between bio-black carbon technology and agricultural development is still in its infancy, such as carbon-based compound fertilizers, carbon-based slow-release fertilizers, etc., but even the products produced by this simple physical weight ratio technology, There is no relevant national production standard in our country

Without relevant national production standards, it is difficult to promote related technologies and products

[0007] 4. At present, domestic desert rice generally uses water-blocking and air-permeable sand fruit. Although it is good, water-blocking and air-permeable sand can make the desert a good field. For the desert environment, water-blocking and air-permeable sand is essentially neutral. neither good nor bad to the desert