Method for making tillage layer soil of re-cultivation in mine with red mud

Abstract

The invention discloses a new application of red mud: making plow layer soil for mine reclamation, and a method for making plow layer soil for mine reclamation with red mud: using red mud as a matrix, adding straw, making The waste residue liquid of the sugar industry is used as ingredients. The dosage range of red mud and ingredients is: 50% to 85% of red mud and 15% to 50% of ingredients; keep the total moisture content in the mixture at 30% to 60%; the temperature of the mixture is controlled at Lower than 100°C; after the mixture is airtight, fermented and decomposed, the reclaimed plow layer soil rich in minerals and organic matter, loose in structure, and with a pH value of 5.5 to 8.5 can be obtained. This method has a wide source of raw materials, simple production process, and low cost. It can not only solve the pollution problem of red mud, but also provide high-quality reclaimed plow layer soil sources for mines, realize waste utilization, treat waste with waste, and turn waste into treasure. the goal of.

Description

(1) Technical field: [0001] The invention relates to the comprehensive utilization and technology of industrial waste, in particular to the technology of making mine reclamation plow layer soil by using red mud, the industrial waste residue of an alumina factory. (two) background technology: [0002] Red mud (red mud) is the industrial waste discharged from bauxite smelting aluminum hydroxide. It is named because its appearance is similar to red mud. For every 1 ton of alumina smelted, 0.6-2 tons of red mud will be discharged. According to the survey, the current large-scale aluminum factories in my country discharge more than 2 million tons of red mud every year. A large amount of red mud not only occupies good fields and land, but also pollutes the environment with the attached alkali. The red mud problem is not only a problem faced by China Aluminum, but also a problem that the world aluminum industry needs to solve urgently. [0003] A number of studies have been carri...

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Problems solved by technology

[0004] The purpose of the present invention is to address the above problems, to provide a new application of red mud - using red mud to make plow layer soil for mine reclamation and its production method, which can quickly eliminate the pollution of red mud Provide high-quality sources of reclaimed arable soil, and the source of materials is wide, the cost is low, and the production process is simple