How to Produce Concrete Blocks by Mining Industry Slag?
China Metal Mining tailings stored more than 5 billion tons, and the number increased to 300 million tons annually. Tailings discharged into the river valley, lowland, pollution of water and soil atmosphere, destroy the environment, and even caused the disaster.
Tailings treatment and utilization is a very urgent matter. Tailings recovery price components can create great wealth, to strengthen environmental governance, and implementation of the overall use of; become victims to treasure through demonstration projects, technical research, the establishment of high value-added industries, and promote the industrialization of scientific and technological achievements.
The tailings is after mining and beneficiation, under the conditions at the time is not appropriate to sorting mine solid waste recycling, often stacked tailings pond. China is now the larger tailings over 400 seats. Metal mines stockpiled tailings more than $ 50 billion t. Tailings produced annually in China will reach more than 300 million tons, accounting for about 1/3 of the country's solid waste, and tailings comprehensive utilization rate is only about 8.2% of the tailings discharged into the 21st century, the national solid mineral mining industry will seriously affect the land and the ecological environment and economic construction, the attention of the people of the country. Stored in the tailings dam due to the tailings multi-ground to below 0.07 ~ 0.15 mm, or the nearest discharged into the river valley lowlands overflow penetration, wind and dust, pollution of water and soil atmosphere, causing environmental pollution, tailings management and utilization It is a very urgent matter. The large amount of tailings, is low because most Chinese mine ore taste, mostly multi-component total (with), at the same time due to historical reasons, the low mineral recovery, there are also many useful components tailings, with the industrial raise the level of production technology and scientific and technological progress, further development and utilization of tailings to become the new mineral resources, the tailings resource governance tailings pollute the environment, and the positive direction of turning waste into treasure.
The tailings contain a large use of non-metallic minerals, individual mines have long tailings as building materials, glass raw material utilization, but unfortunately failed to arouse the universal importance of the mining sector. Can not the rest of the large number of tailings As countries strengthen land management for environmental protection the tailings area become a pressing issue that must be addressed, recovery of valuable tailings are still dealing. To this end, mining science and technology workers to strengthen the Development Experimental Research of the tailings the nonmetal component in recovery and all tailings overall utilization.
Tailings as a whole in the past 20 years practical experience, mine waste rock and mill tailings as railway, highway ballast, concrete coarse aggregate. A variety of mine tailings as construction sand, of unburned tailings brick, block, square brick, paving slabs and new wall materials, raw materials, and some mines ceramic wall and floor tiles, tile, lightweight materials can be prepared; many mine tailings has become a good material for cement, is expected to form the tailings cement series; the high silicon tailings may make glass; many tailings system glass-ceramics: new materials, raw materials is expected to become increasingly acknowledged by the society, and become part of the new social productivity.
Mining waste utilization status quo
1 gangue comprehensive utilization
Gangue sludge generated in the mining process, including the boring waste rock roadway excavation process, the waste rock mined coal mining from the roof, floor and mezzanine. It is a very low carbon associated with coal seams in the coal-forming process, the hard black rock, is composed of carbonaceous shale, carbonaceous sandstone, shale, clay mixture. All over the country gangue chemical composition vary greatly. With the development of the coal industry, foreign major coal-producing countries and China have had a number of one hundred million tons of coal gangue, and continues to increase. Gangue of accumulation not only occupy a lot of land, and sulfide distribution will pollute the atmosphere and water, and susceptible to air oxidation of pyrite heat release, and even lead to spontaneous combustion, smoke pollute the environment. Of course, the gangue is also a kind of available resources. Higher carbon content of coal gangue directly for boiling furnace as fuel; can be used for the production of bricks, cement and other building materials with low carbon content, low carbon content can be filled pit created or used as roadbed material. And Gangue can manufacture some chemical products.
Mining waste rock and tailings as fill material
Mining waste rock is used as a filling material filling underground goaf can save cost filler specifically to mining, but also reduce the surface area of €‹€‹the waste rock pile, can also reduce or eliminate the harm caused by the waste rock on the environment. Many mines are the measures taken, received a significant economic and social benefits. China's uranium mine waste rock has been mostly filling material to backfill the mined-out area.
3 tailings coarse sand for concrete aggregate
It is the direct use of the tailings not been the preparation of re-election and regulations class used for non-metallic building materials. This is the focus of this discussion.
4 recover useful metals from waste rock or tailings
Often contain a variety of useful elements in the waste rock and tailings recovery and extraction of these elements, not only economic benefits, but also can reduce the environmental pollution of waste rock and tailings.
rock crusher http://www.zdcrusher.com
Tailings treatment and utilization is a very urgent matter. Tailings recovery price components can create great wealth, to strengthen environmental governance, and implementation of the overall use of; become victims to treasure through demonstration projects, technical research, the establishment of high value-added industries, and promote the industrialization of scientific and technological achievements.
The tailings is after mining and beneficiation, under the conditions at the time is not appropriate to sorting mine solid waste recycling, often stacked tailings pond. China is now the larger tailings over 400 seats. Metal mines stockpiled tailings more than $ 50 billion t. Tailings produced annually in China will reach more than 300 million tons, accounting for about 1/3 of the country's solid waste, and tailings comprehensive utilization rate is only about 8.2% of the tailings discharged into the 21st century, the national solid mineral mining industry will seriously affect the land and the ecological environment and economic construction, the attention of the people of the country. Stored in the tailings dam due to the tailings multi-ground to below 0.07 ~ 0.15 mm, or the nearest discharged into the river valley lowlands overflow penetration, wind and dust, pollution of water and soil atmosphere, causing environmental pollution, tailings management and utilization It is a very urgent matter. The large amount of tailings, is low because most Chinese mine ore taste, mostly multi-component total (with), at the same time due to historical reasons, the low mineral recovery, there are also many useful components tailings, with the industrial raise the level of production technology and scientific and technological progress, further development and utilization of tailings to become the new mineral resources, the tailings resource governance tailings pollute the environment, and the positive direction of turning waste into treasure.
The tailings contain a large use of non-metallic minerals, individual mines have long tailings as building materials, glass raw material utilization, but unfortunately failed to arouse the universal importance of the mining sector. Can not the rest of the large number of tailings As countries strengthen land management for environmental protection the tailings area become a pressing issue that must be addressed, recovery of valuable tailings are still dealing. To this end, mining science and technology workers to strengthen the Development Experimental Research of the tailings the nonmetal component in recovery and all tailings overall utilization.
Tailings as a whole in the past 20 years practical experience, mine waste rock and mill tailings as railway, highway ballast, concrete coarse aggregate. A variety of mine tailings as construction sand, of unburned tailings brick, block, square brick, paving slabs and new wall materials, raw materials, and some mines ceramic wall and floor tiles, tile, lightweight materials can be prepared; many mine tailings has become a good material for cement, is expected to form the tailings cement series; the high silicon tailings may make glass; many tailings system glass-ceramics: new materials, raw materials is expected to become increasingly acknowledged by the society, and become part of the new social productivity.
Mining waste utilization status quo
1 gangue comprehensive utilization
Gangue sludge generated in the mining process, including the boring waste rock roadway excavation process, the waste rock mined coal mining from the roof, floor and mezzanine. It is a very low carbon associated with coal seams in the coal-forming process, the hard black rock, is composed of carbonaceous shale, carbonaceous sandstone, shale, clay mixture. All over the country gangue chemical composition vary greatly. With the development of the coal industry, foreign major coal-producing countries and China have had a number of one hundred million tons of coal gangue, and continues to increase. Gangue of accumulation not only occupy a lot of land, and sulfide distribution will pollute the atmosphere and water, and susceptible to air oxidation of pyrite heat release, and even lead to spontaneous combustion, smoke pollute the environment. Of course, the gangue is also a kind of available resources. Higher carbon content of coal gangue directly for boiling furnace as fuel; can be used for the production of bricks, cement and other building materials with low carbon content, low carbon content can be filled pit created or used as roadbed material. And Gangue can manufacture some chemical products.
Mining waste rock and tailings as fill material
Mining waste rock is used as a filling material filling underground goaf can save cost filler specifically to mining, but also reduce the surface area of €‹€‹the waste rock pile, can also reduce or eliminate the harm caused by the waste rock on the environment. Many mines are the measures taken, received a significant economic and social benefits. China's uranium mine waste rock has been mostly filling material to backfill the mined-out area.
3 tailings coarse sand for concrete aggregate
It is the direct use of the tailings not been the preparation of re-election and regulations class used for non-metallic building materials. This is the focus of this discussion.
4 recover useful metals from waste rock or tailings
Often contain a variety of useful elements in the waste rock and tailings recovery and extraction of these elements, not only economic benefits, but also can reduce the environmental pollution of waste rock and tailings.
rock crusher http://www.zdcrusher.com
