Sand-fixing agent and preparation method thereof

Abstract

The invention discloses a sand-fixing agent and a preparation method thereof. The preparation method comprises the steps: weighing PVA (polyvinyl alcohol), PASP (sodium of polyaspartic acid), corn starch, dicyandiamide powder and water, mixing, allowing reaction at 80-90 DEG C, and stirring for 20-30 min to obtain multifunctional chelate; weighing low-grade oil shale, oil shale residue, and furfural residue, drying the low-grade oil shale and the furfural residue, crushing, screening with a 3 mm screen, drying the oil shale residue, crushing, screening with a 6 mm screen, adding the above screened materials into a stirrer, spraying the multifunctional chelate accounting for 5-10% of the materials during stirring, and mixing well to obtain the sand-fixing agent. The sand-fixing agent and the preparation method thereof have the advantages that, for instance, the method is simple, the materials are easy to obtain, the cost is low, water and fertilizer can be maintained, rich nutrition isprovided, physical and chemical properties of aeolian sandy soil can be effectively improved during sand fixing, fertility level of the aeolian sandy soil can be increased, the usage of low-grade oilshale and residue soil is reduced and the ecological environment is protected.

Description

technical field [0001] The invention belongs to the technical field of sand fixing, and in particular relates to a sand fixing agent and a preparation method thereof. Background technique [0002] Land desertification is a major global ecological problem that affects human survival and development, and it is also the most serious ecological problem in my country. Desertification in my country is not only large in area and wide in distribution, but also seriously harmful and far-reaching. Desertification destroys the ecological environment and threatens human survival: 1) Sandstorms cause serious pollution to the atmospheric environment. 2) Desertification degrades biomass and reduces species abundance, posing a serious threat to biodiversity. 3) Desertification destroys land resources, reduces usable land and degrades its quality, resulting in reduced or even complete failure of agricultural and animal husbandry production. In addition, desertification often causes seriou...

AI Technical Summary

Problems solved by technology

Desertification destroys the ecological environment and threatens human survival: 1) Sandstorms cause serious pollution to the atmospheric environment

2) Desertification degrades biomass and reduces species abundance, posing a serious threat to biodiversity

3) Desertification destroys land resources, reduces usable land and degrades its quality, resulting in reduced or even no harvest in agricultural and animal husbandry production

With the increasing shortage of oil, natural gas and other resources in the world, the development and utilization of oil shale is expanding. Low-grade oil shale and ash are the main solid wastes discharged by the oil shale industry. A large amount of low-grade oil shale and ash are accumulated. Chengshan not only occupies a large amount of land, but also requires a large amount of maintenance funds every year, and at the same time causes serious damage to the surrounding ecological environment