A few days ago, an authoritative person in the non-ferrous industry asserted that China's alumina will never become the second iron ore. This statement is tantamount to giving the industry people a reassurance.
The reason why China's alumina will not become the second "iron ore" is that China has abundant and reliable backup resources. The first is high-aluminum fly ash, which is of high quality and mature technology. In addition to Erdos and Zhungeer in Inner Mongolia, Jinzhou Luzhou and Zhangzhou have also discovered high-aluminum fly ash with an alumina content of more than 40%, and the reserves are huge. Taking Cangzhou, Shanxi Province as an example, the data shows that the coal reserves of “coal capital†are 49 billion tons, and the content of Al2O3 in coal ash is generally higher. The Shenzhou Shentou Power Plant is the largest power plant in North China. Over the years, there are over 100 million tons of fly ash, and more than 5 million tons of fly ash are discharged every year. The coal used in power plants comes from nearby mines instead of the above-mentioned three mines. The same high content of Al2O3 and coal gangue as fly ash. Kaolin. The coal gangue is used as raw material to prepare the mullite plant of Youyu. The gangue Al2O3 content is above 40%. It is also used to prepare mullite in Huairen factory. The gangue Al2O3 content is 45%. The average coal content of vermiculite is 20%, and the content of fly ash Al2O3 after burning is increased by 50%~55%. Kaolin has low-quality iron and high Al2O3 content of more than 40%, which is rare at home and abroad. Thermal power generation in Chenzhou area, with a installed capacity of 17 million kilowatts in 1015, and more than 10 million tons of fly ash per year after reaching the standard. Coal gangue production is 15% of coal production. In 2015, coal gangue production will reach 33 million tons, two totaling 43 million tons, which is enough for annual output of more than 10 million tons of alumina.
Experiments show that: using advanced technology, the content of aluminum oxide in ash is more than 40%, and the dissolution rate can reach 85%. At this time, 1 ton of alumina can be produced per 3 tons of fly ash, which is equivalent to imported bauxite. At the same time, it can also produce a large number of high value-added products, such as hydroxy silicon, silicon fertilizer, siliceous soil improver, desulfurized gypsum powder, cement grinding aid, mullite, iron powder, etc., and the residue is used to produce building materials. It can achieve slag-free production.
If it can supply coal for fixed-point supply, special coal, or select, the economic and social benefits will increase accordingly, especially for the selection. When the selected coal ash is less than 1%, the selected coal heat can be selected. Up to 5,800 kcal, so ordinary thermal coal will be converted into high-quality thermal coal, adding more than 35%, and reducing the flow rate of 20%, reducing coal consumption of power plants; high-aluminum tailings are also developed and utilized on the output of alumina. At the same time, the above-mentioned high value-added products will be more than 20 million tons.
Such a huge and precious reserve resource, coupled with the development and application of non-aluminum mines, the strong promotion of mineral processing Bayer process technology, why will China alumina become the second "iron ore"? However, high-aluminum fly ash, coal The development and utilization of meteorites and non-aluminum minerals is a new subject. It is not easy to do this article well. Especially for a long time, people have always dismissed fly ash, coal gangue and other non-aluminum minerals. How to change the concept? It is a big problem.
Inner Mongolia has been discovering high-aluminum fly ash for more than ten years. Later, due to government support, Huadian, Datang and other enterprises participated in the process, and the two alumina plants, Erdos and Tokto, were built in the near future. It can be said that it is difficult. In 2004, Zhangzhou high-alumina fly ash was verified and verified. In the past five years or so, in the 13 key fly ash development and utilization projects in the region, it is not the production of cement, or the production of wall materials, resulting in a lot of high-priced resources being wasted. From this, it is proposed that high-value-added products such as alumina are not in the interest; the aluminum-silicon-titanium alloy project is electrically smelted with fly ash as raw material, and the fund of 50 million yuan has been running for two years and has not yet been implemented. On the other hand, if we can change our concept and be cautious, we will learn from Inner Mongolia's experience, change our development mode, and increase our R&D efforts. The government will support it, the big companies will participate, and there will be less detours. The prospects are bright.
Today, a low-carbon economy and a circular economy have become social consensus. The development and utilization of high-aluminum fly ash and coal gangue, with the aim of energy conservation, emission reduction, environmental protection, resource conservation, pollution reduction, waste reduction, and construction of a two-oriented society, fully comply with the objective of low-carbon economy and circular economy The requirement is the focus of the "Circular Economy Promotion Law" on the disposal of solid waste, which will soon be recognized and valued by the economy and society. For the aluminum industry, it is related to the scientific and sustainable development of the entire industry. The general trend is that high alumina fly ash and coal gangue together with other non-aluminum minerals will break the bauxite-alumina-electrolytic aluminum mode and become a bauxite mine. Another important resource guarantee for the lack of, so that the shadow of "iron ore" will disappear forever.
The reason why China's alumina will not become the second "iron ore" is that China has abundant and reliable backup resources. The first is high-aluminum fly ash, which is of high quality and mature technology. In addition to Erdos and Zhungeer in Inner Mongolia, Jinzhou Luzhou and Zhangzhou have also discovered high-aluminum fly ash with an alumina content of more than 40%, and the reserves are huge. Taking Cangzhou, Shanxi Province as an example, the data shows that the coal reserves of “coal capital†are 49 billion tons, and the content of Al2O3 in coal ash is generally higher. The Shenzhou Shentou Power Plant is the largest power plant in North China. Over the years, there are over 100 million tons of fly ash, and more than 5 million tons of fly ash are discharged every year. The coal used in power plants comes from nearby mines instead of the above-mentioned three mines. The same high content of Al2O3 and coal gangue as fly ash. Kaolin. The coal gangue is used as raw material to prepare the mullite plant of Youyu. The gangue Al2O3 content is above 40%. It is also used to prepare mullite in Huairen factory. The gangue Al2O3 content is 45%. The average coal content of vermiculite is 20%, and the content of fly ash Al2O3 after burning is increased by 50%~55%. Kaolin has low-quality iron and high Al2O3 content of more than 40%, which is rare at home and abroad. Thermal power generation in Chenzhou area, with a installed capacity of 17 million kilowatts in 1015, and more than 10 million tons of fly ash per year after reaching the standard. Coal gangue production is 15% of coal production. In 2015, coal gangue production will reach 33 million tons, two totaling 43 million tons, which is enough for annual output of more than 10 million tons of alumina.
Experiments show that: using advanced technology, the content of aluminum oxide in ash is more than 40%, and the dissolution rate can reach 85%. At this time, 1 ton of alumina can be produced per 3 tons of fly ash, which is equivalent to imported bauxite. At the same time, it can also produce a large number of high value-added products, such as hydroxy silicon, silicon fertilizer, siliceous soil improver, desulfurized gypsum powder, cement grinding aid, mullite, iron powder, etc., and the residue is used to produce building materials. It can achieve slag-free production.
If it can supply coal for fixed-point supply, special coal, or select, the economic and social benefits will increase accordingly, especially for the selection. When the selected coal ash is less than 1%, the selected coal heat can be selected. Up to 5,800 kcal, so ordinary thermal coal will be converted into high-quality thermal coal, adding more than 35%, and reducing the flow rate of 20%, reducing coal consumption of power plants; high-aluminum tailings are also developed and utilized on the output of alumina. At the same time, the above-mentioned high value-added products will be more than 20 million tons.
Such a huge and precious reserve resource, coupled with the development and application of non-aluminum mines, the strong promotion of mineral processing Bayer process technology, why will China alumina become the second "iron ore"? However, high-aluminum fly ash, coal The development and utilization of meteorites and non-aluminum minerals is a new subject. It is not easy to do this article well. Especially for a long time, people have always dismissed fly ash, coal gangue and other non-aluminum minerals. How to change the concept? It is a big problem.
Inner Mongolia has been discovering high-aluminum fly ash for more than ten years. Later, due to government support, Huadian, Datang and other enterprises participated in the process, and the two alumina plants, Erdos and Tokto, were built in the near future. It can be said that it is difficult. In 2004, Zhangzhou high-alumina fly ash was verified and verified. In the past five years or so, in the 13 key fly ash development and utilization projects in the region, it is not the production of cement, or the production of wall materials, resulting in a lot of high-priced resources being wasted. From this, it is proposed that high-value-added products such as alumina are not in the interest; the aluminum-silicon-titanium alloy project is electrically smelted with fly ash as raw material, and the fund of 50 million yuan has been running for two years and has not yet been implemented. On the other hand, if we can change our concept and be cautious, we will learn from Inner Mongolia's experience, change our development mode, and increase our R&D efforts. The government will support it, the big companies will participate, and there will be less detours. The prospects are bright.
Today, a low-carbon economy and a circular economy have become social consensus. The development and utilization of high-aluminum fly ash and coal gangue, with the aim of energy conservation, emission reduction, environmental protection, resource conservation, pollution reduction, waste reduction, and construction of a two-oriented society, fully comply with the objective of low-carbon economy and circular economy The requirement is the focus of the "Circular Economy Promotion Law" on the disposal of solid waste, which will soon be recognized and valued by the economy and society. For the aluminum industry, it is related to the scientific and sustainable development of the entire industry. The general trend is that high alumina fly ash and coal gangue together with other non-aluminum minerals will break the bauxite-alumina-electrolytic aluminum mode and become a bauxite mine. Another important resource guarantee for the lack of, so that the shadow of "iron ore" will disappear forever.
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