阅读说明：本技术 一种锰矿尾矿净化固化处置的方法 (Method for purifying and curing manganese ore tailings ) 是由 刘清汉 刘鑫 于 2019-01-17 设计创作，主要内容包括：本发明属于环保材料领域,尤其涉及一种锰矿尾矿净化固化处置的方法,本发明提供一种制备原料价格低廉、工艺简单、机械化生产、锰的浸出率低,耐久性能好的一种锰矿尾矿净化固化处置的方法。一种锰矿尾矿净化固化处置的方法,其特征在于,按照质量份计算,高锰尾矿10～80份、锰螯合剂1～3份、工业废渣0～20份、固化料10～70份、水8～16份。包括如下流程:(1)称取锰尾矿、工业废渣、锰螯合剂；(2)搅拌轮碾；(3)称取固化料和水；(4)轮碾搅拌；(5)熟化；(6)压制；(7)养护。所述制备具体流程如下：取锰尾矿、工业废渣和集料,搅拌1～10min,轮碾1～10min,取固化料和水,加入轮碾搅拌机(含锰尾矿、工业废渣和锰螯合剂的混合物料)中,轮碾搅拌1～20min,熟化10～150min,在10～30MPa压力下压制成坯体,自然养护。(The invention belongs to the field of environment-friendly materials, and particularly relates to a method for purifying, curing and disposing manganese ore tailings. The method for purifying and curing manganese ore tailings is characterized by comprising, by mass, 10-80 parts of high-manganese tailings, 1-3 parts of a manganese chelating agent, 0-20 parts of industrial waste residues, 10-70 parts of a curing material and 8-16 parts of water. Weighing manganese tailings, industrial waste residues and a manganese chelating agent; (2) stirring and rolling; (3) weighing a curing material and water; (4) grinding and stirring; (5) curing; (6) pressing; (7) and (5) maintaining. The preparation method comprises the following specific steps: taking manganese tailings, industrial waste residues and aggregates, stirring for 1-10 min, performing wheel milling for 1-10 min, taking a curing material and water, adding the curing material and the water into a wheel milling stirrer (a mixed material containing the manganese tailings, the industrial waste residues and a manganese chelating agent), performing wheel milling and stirring for 1-20 min, curing for 10-150 min, pressing under the pressure of 10-30 MPa to prepare a blank, and performing natural curing.)

1. A method for purifying and curing manganese ore tailings is characterized by comprising the following steps: the manganese tailing curing agent is prepared by mixing and stirring 10-80 parts by weight of manganese tailings, 1-3 parts by weight of manganese chelating agent, 0-20 parts by weight of industrial waste residue, 10-70 parts by weight of curing material and 8-16 parts by weight of water.

2. The method for purifying, solidifying and disposing manganese ore tailings according to claim 1, wherein the method comprises the following steps: the manganese chelating agent is composed of one or a mixture of organic sulfur high molecular compounds, organic amine high molecular compounds and the like.

3. The method for purifying, solidifying and disposing manganese ore tailings according to claim 1, wherein the method comprises the following steps: the solidifying material is one or a mixture of more of silicate, aluminate, sulfate, fluorite minerals and sepiolite minerals.

4. The method for purifying, solidifying and disposing manganese ore tailings according to claim 1, wherein the method comprises the following steps: the preparation method mainly comprises the steps of weighing raw materials, rolling, curing, press forming, maintaining and the like.

Technical Field

The invention belongs to the field of environment-friendly materials, and particularly relates to a method for purifying, curing and disposing manganese ore tailings.

Background

Manganese ore resources are important raw materials of battery anode materials, and manganese ore resources are used for lithium manganate and nickel cobalt manganese ternary materials. The reserve of manganese ore resources in China is 0.48 hundred million tons, and accounts for 7.07 percent of the global reserve. Common manganese ores include anhydrous and hydrous manganese oxide ores and manganese carbonate ores, manganese ores mainly comprise manganese oxide ores in the world, and manganese carbonate ores account for about 73% of the reserves of Chinese manganese ores. The Chinese manganese ore resources are mainly distributed in Guizhou, Guangxi, accounting for 55 percent, and mainly used in medium and small mines. According to the journal of the Chinese manganese industry, China finds that the storage capacity of manganese resources is 15.51 hundred million tons, the manganese resources are mainly distributed in Guizhou and Guangxi, the manganese resources account for 55 percent (28 percent in Guizhou and 27 percent in Guangxi) of the national storage capacity, and the resource proportion of the first 5 provinces is up to 80 percent. By the end of 2017, the whole country shares 230 manganese mines, wherein the ultra-large manganese mine is only 5, the large-scale mine (the resource amount is more than 2000 ten thousand tons) is more than 30, and the rest mines are all small and medium-sized.

The manganese content of the soil is 20-10000 ppm, and the average value is 1000 ppm. In the process of weathering rock into soil, manganese is not lost due to leaching of the soil, and is not enriched in a large amount. For example, basalt, to soil, the manganese content has changed from 1200 milligrams per kilogram of rock to 1300 milligrams. It is estimated that: for soil that has not been tilled or contaminated, rock weathering has an input of 26 mg of manganese per square meter of soil per year; the manganese input into the soil during rainfall and dustfall is 0.8 mg, and the manganese input into the soil from the soil to organisms is equal to the manganese input into the soil from rotten dead branches and leaves, and the quantity of the manganese is 400 mg; leaching is about 2 mg out of the soil; for the soil with medium pollution and cultivated soil, the amount of manganese input in rock weathering is unchanged, the amount of manganese input in precipitation and dust fall is increased to 20 mg, the amount of manganese input through fertilizers is 5 mg, and the amount of manganese input from the soil to crops is 5-60 mg. It can be seen that, in addition to natural circulation, the most significant effect on the manganese content of the soil is from the manganese in the atmosphere. The soil polluted by manganese is mainly acid soil, and can cause manganese poisoning of some plants. The lime is mixed in the soil, so that the pH value of the soil can be increased, and the soil pollution condition is improved.

China stipulates that the content of manganese in drinking water for life cannot exceed 0.1 mg/L, the maximum allowable concentration of manganese in the atmosphere of a residential area is 0.01 mg/cubic meter per day on average, and the maximum allowable concentration of manganese dioxide in the air of a workshop is 0.2 mg/cubic meter.

Disclosure of Invention

In order to solve the problems, the invention provides a method for purifying, solidifying and disposing manganese ore tailings, which has the advantages of low price of preparation raw materials, simple process, mechanical production, low leaching rate of manganese and good durability. The technical scheme adopted by the invention for solving the technical problems is as follows: a method for purifying and curing manganese ore tailings comprises the steps of grinding and stirring raw materials according to a specified proportion, mixing, and pressing for molding, so that harmless curing treatment of manganese slag is realized. The manganese tailing curing agent is characterized by comprising, by mass, 10-80 parts of manganese tailings, 1-3 parts of a manganese chelating agent, 0-20 parts of industrial waste residues, 10-70 parts of curing materials and 8-16 parts of water. Weighing manganese tailings, industrial waste residues and a manganese chelating agent; (2) stirring and rolling; (3) weighing a curing material and water; (4) grinding and stirring; (5) curing; (6) pressing; (7) and (5) maintaining. The preparation method comprises the following specific steps: taking manganese tailings, industrial waste residues and aggregates, stirring for 1-10 min, performing wheel milling for 1-10 min, taking a curing material and water, adding the curing material and the water into a wheel milling stirrer (a mixed material containing the manganese tailings, the industrial waste residues and a manganese chelating agent), performing wheel milling and stirring for 1-20 min, curing for 10-150 min, pressing under the pressure of 10-30 MPa to prepare a blank, and performing natural curing. The manganese chelating agent is one or a mixture of organic sulfur high molecular compound and organic amine high molecular compound. The solidifying material is one or a mixture of more of silicate, aluminate, sulfate, fluorite minerals and sepiolite minerals. The invention has the beneficial effects that: a method for purifying, solidifying and disposing manganese ore tailings comprises the main raw materials of industrial waste residues, solidifying materials and aggregates, wherein the solidifying materials mainly comprise silicate, aluminate and sulphoaluminate and are low in price; the preparation method mainly comprises the steps of weighing raw materials, rolling, curing, press forming and maintaining, and has the advantages of simple preparation process, less required industrial equipment and suitability for large-scale mechanical production; the harmless cured brick of the high manganese tailings produced by the technology has excellent mechanical property, low leaching rate of manganese and good durability, and is a simple and safe way for curing manganese.

Drawings

FIG. 1 is a process flow diagram of a preparation method of a high manganese tailing harmless cured brick. In the figure, 1, manganese tailings; 2. industrial waste residue; 3. aggregating; 4. a manganese chelating agent; 5. curing the material; 6. water; 7. mixing a first material; 8. mixing a second material; 9. curing; 10. pressing and forming; 11. maintaining; 12. stirring; 13. and (6) grinding by using a wheel.

Detailed Description