Aluminum ash is a by-product of electrolytic aluminum industry, which is divided into primary aluminum ash and secondary aluminum ash. Primary aluminum ash is the ash regularly picked out during the melting and casting process of electrolytic aluminum plants, renewable aluminum plants and other aluminum-related industries, in which the metal aluminum content is 15%~20%. Enterprises usually use methods such as frying or pressing to recover metal aluminum from aluminum ash. The primary aluminum ash is ground and sieved to separate the simple aluminum, and the fine ash obtained is the secondary aluminum ash. The secondary harmless treatment of aluminum ash usually requires grinding to 120 mesh. So, what equipment is used to process 120 meshes of secondary aluminum ash? Is it appropriate to process the powder with the aluminum ash Raymond mill? The following is the answer from HCMilling(Guilin Hongcheng), the manufacturer of the aluminum ash Raymond mill.

The harmless treatment of secondary aluminum ash is to make full use of the trace elements aluminum and aluminum nitride (aluminum nitride content in aluminum ash is 15-40%) contained in secondary aluminum ash to contact with oxygen to produce combustion reaction, release a certain amount of heat, and generate the high temperature conditions required for aluminum nitride to be converted into aluminum oxide and nitrogen, so as to realize the purpose of aluminum ash conversion from solid objects with hazardous waste properties to solid objects without hazardous properties. The process is to first remove iron from the secondary aluminum ash, and then transport it to the feeding port of the crushing, grinding and screening machine through the automatic conveyor, screen out the granular aluminum and fine ash, and automatically transport the fine ash to the silo on the top of the 10T high temperature calciner for use, and the granular aluminum enters the ash fryer or rotary furnace for metal aluminum recovery. The processing of secondary aluminum ash is mainly a grinding process. What equipment is used to process 120 meshes of secondary aluminum ash? Generally, 120 meshes of secondary aluminum ash are processed with aluminum ash Raymond mill. Next, let’s take a look at the processing process of the 120 mesh aluminum ash Raymond mill for secondary aluminum ash.

The process flow of aluminum ash Raymond mill processing: the forklift will transport the aluminum ash to be processed in the workshop to the feed bin of the belt conveyor, and then it will be transported to the chute of the front feed bin of the ball mill through the sealed belt conveyor, and then it will be guided to the ball mill through the chute for grinding preliminary treatment (the belt conveying method is the uniform feeding of the full ball mill to ensure the best ball milling effect). The materials after the primary crushing treatment of the ball mill pass through the screening operation of the linear vibrating screen, and the bulk aluminum (the aluminum content of such materials is more than 95%) of>4mm is sorted out and taken away by the material box. The remaining fine powder of ≤ 4mm is transported to the aluminum powder storage bin through the bucket elevator, and is regularly and quantitatively transported to the Raymond mill through the screw conveyor for secondary crushing (reducing the working time of the aluminum ash Raymond mill) through the material level meter control. After being processed by the aluminum lime Raymond mill, it can reach 120-150 mesh fine powder. Such fine powder is the necessary link to achieve calcination. The calcined ash can reach a high temperature of 1100-1400 ℃, and the high-temperature ash is directed to the high-speed cooling system below the horizontal plane through the chute for strong cooling. After cooling, it can reach a temperature of<60 ℃ and can be used as finished ash for downstream production line. Such finished ash is finally transported to the ground through bucket elevator for bagging. The complete set of secondary ash equipment of aluminum ash Raymond mill is equipped with complete and environment-friendly pulse bag dust removal equipment.

Is it suitable to process aluminum ash with Raymond mill? The answer is appropriate. The 120-meter secondary aluminum ash processing and production process of aluminum ash Raymond mill does not need continuous natural gas and other energy sources. Natural gas is used as the ignition of the furnace. In the subsequent production process, only electricity is needed. The overall power is about 400kw. The power consumption for each ton of secondary aluminum ash is about 120KWh, and the cost is about 100-120 yuan/ton. It is the lowest energy consumption level of all secondary aluminum ash harmless treatment methods on the market at present; The main equipment covers an area of about 500m2, including about 1000m2 workshops for raw materials and finished products; The investment in the whole set of main equipment is about 3-5 million yuan (different equipment manufacturers and brands). For example, if the production capacity reaches 10000 tons/year, one set of high-temperature calciner will be added, and the investment in main equipment will increase by 1-1.5 million. The aluminum ash powder processed by aluminum ash grinding mill has the characteristics of low investment, small floor area, low operation cost, high automation, simple operation and wide product outlet. It has been put into operation in some enterprises and has been recognized by the environmental protection department.

If you have relevant requirements, please contact mkt@hcmilling.com or call at +86-773-3568321, HCM will tailor for you the most suitable grinding mill program based on your needs, more details please check www.hcmilling.com. Our selection engineer will plan scientific equipment configuration for you and quote for you.