Ionic rare earth tailing soil improver and preparation method thereof

Abstract

The invention discloses an ionic rare earth tailing soil improver and a preparation method thereof. The soil improver aims to solve the technical problem that the soil texture and the physical and chemical structures of the soil are destroyed as ecology of the conventional ionic rare earth tailing is destroyed by people, the organic matter content is extremely low, plants are hard to grow as the soil is short of fertilizer and water, and soil is hard to be repaired and modified according to the conventional physical and chemical repair methods and plant ecological repair methods. The soil improver comprises pigment manure, mushroom residues, bran, humic acid, soybean pulp, water hyacinth, erigeron annuus, a microbial compound inoculant, straws, rice hulls, cow dung, saw dust, brown coal, coconut shells, graphene, a hydrogel and the like. The soil improver can supplement nutrients to soil of the ionic rare earth tailing efficiently, and by combining planting of plants and conversion andabsorption of harmful substances in soil by the soil improver, the soil of the ionic rare earth tailing is repaired stably and efficiently, and the soil repair cost is controlled greatly.

Description

technical field [0001] The invention belongs to the field of mine soil environment restoration, and in particular relates to an ionic rare earth tailings soil conditioner and a preparation method thereof Background technique [0002] my country's rare earth resources are rich in reserves, accounting for 90% of the world's similar resources. At the same time, it also has unique new rare earth deposits in the world, including ion-adsorption rare earth ores. Ion-adsorption rare earth ores are mainly distributed in Jiangxi, Guangdong, Hunan, Guangxi, Fujian and other places; 60%-90% of the rare earth in the raw ore of ion-adsorption rare earth ore in the south is adsorbed in kaolin and mica in the state of hydrated or hydroxyl hydrated ions. The rare earth ions are easily exchanged in the electrolyte solution, so sulfuric acid is widely used at present. Ammonium is used as a leaching agent, and the in-situ leaching of rare earth elements is carried out by drilling and injecting li...

AI Technical Summary

Problems solved by technology

[0006] Aiming at the deficiencies of the prior art, the object of the present invention is to provide an ionic rare earth tailings soil conditioner and a preparation method thereof. The soil conditioner aims to solve the problem that the ecology of the existing ionic rare earth Soil texture and its physical and chemical structure, organic matter content is extremely low, the soil is short of fertilizer and water, making it difficult for plants to grow, but the existing physical and chemical restoration methods and plant ecological restoration methods are difficult to effectively repair and improve the technical problems of soil; through this The soil conditioner can efficiently supplement the soil of ionic rare earth tailings with nutrients, and combined with the planting of plants and the conversion and absorption of harmful substances in the soil by soil conditioners, the stable and efficient restoration of ionic rare earth tailings soil is realized , while greatly controlling the cost of soil remediation