Aluminum ash is the slag produced in the production process of electrolytic aluminum or cast aluminum, which is a hazardous solid waste. Aluminum ash contains aluminum element, aluminum oxide, aluminum carbide, silicon, fluoride, chloride and other components. Among them, alumina accounts for more than 70%, which has a high recycling value. Aluminum ash is divided into primary aluminum ash, secondary aluminum ash, cathode carbon block, anode carbon slag, electrolytic cell impermeable material, refractory, aluminum alloy factory dust collection, aluminum processing sludge, etc.

Aluminium ash should start from the potential value of quantity, nature, composition, etc., and the directions of use are as follows:

1. The aluminum ash ball mill production line of Henan Zhengzhou Mining Machinery Co., Ltd. can effectively extract the elemental aluminum in the aluminum ash, which can be used for smelting aluminum ingots.

2. The waste ash after aluminum extraction with the aluminum ash ball mill production line of Henan Zheng Mining Machinery Co., Ltd. can be directly used to produce special cement.

3. The aluminum ash mixing mill and aluminum ash rotary kiln production line of Henan Zhengzhou Mining Machinery Co., Ltd. can produce calcium aluminate and water purification materials

Harmless aluminum ash hazardous waste disposal program: through acid leaching, alkaline leaching, washing, etc., the nitride, fluoride, salt and other impurities in the secondary aluminum ash are removed to obtain harmless aluminum ash before safe filling Buried. Recycling process: After removing toxic and harmful substances, the secondary aluminum ash is processed by high temperature or cold processing to produce different products such as steel claw protection ring, brown corundum abrasive, refining agent and water purifying agent, etc., or return to the electrolytic cell as electrolytic aluminum raw material.

Aluminum ash is an important solid waste in the aluminum industry. The composition of aluminum ash is very complex and contains a lot of usable resources, but because it also contains a certain amount of toxic elements, it is included in the national hazardous waste list, which is difficult to handle and use. Larger.

Zhengzhou Zhonglv Environmental Protection New Material Co., Ltd. is committed to the development and research of aluminum ash comprehensive utilization technology. Its treatment process includes a high-temperature sintering process; after learning that Zhengzhou Mining Machinery has built a rotary kiln pilot test line, it pulled 1400Kg of material for The sintering pilot test was carried out, and the calcination conditions at 1200℃, 1150℃ and 1100℃ were tested successively, and the expected satisfactory results were achieved.

The purpose of the pilot test is to smoothly transition the formula and process developed from the pilot test to industrial production, so as to ensure that the quality of the products produced in the industrial production is consistent with the quality of the pilot and pilot production. The equipment (design requirements and operating principles) and process of the pilot test line of Henan Zhengzhou's mechanical rotary kiln are consistent with industrial production, and can reflect the actual situation of industrial production, including the quality of raw materials, process control and the quality of final products; Expanding the scale and realizing the large-scale production of the real industrial significance economic scale provides reliable process means and data foundation.