What equipment is needed for fly ash processing?

 

After the pulverized coal fuel in the boiler of a thermal power plant is burned, the fine dust collected from the exhaust system is called fly ash. The domestic fly ash market has great potential.

 

The accumulation of fly ash is astonishing. Since the founding of the People's Republic of China, the total amount of unused fly ash has exceeded 2.5 billion tons. In 2010, the coal used for power generation reached 54% of the coal output in that year, and in 2020 it will reach 60%, and for a long time to come, the proportion of coal power generation will remain at 75%.

 

Although the utilization amount and utilization rate of fly ash are increasing year by year, they still cannot catch up with the accumulation speed of fly ash, so the utilization market of fly ash is still very large.

 

Brick making, production of cement, ceramsite, road construction materials, agriculture and environmental protection utilization are the current general directions for the use of fly ash. According to the amount of fly ash, the main customers are concentrated in:

1. Cement plant or concrete mixing station. (Ordinary grades of cement are mixed with fly ash, the highest can be mixed up to 30%)

2. Expressway construction. (for expressway subgrade filling)

3. Fly ash brick yard. (The country currently prohibits clay firing bricks)

 

The fly ash produced by the thermal power plant belongs to the raw ash, which needs to be sorted and sold. The price is higher. The first-grade ash is easy to sell, followed by the second-grade ash. different.

 

First grind and then classify. A classifier is connected in series behind the mill. The powder after grinding is classified into coarse and fine particles through the classifier. The fine particles whose fineness meets the material requirements are sent to the finished product warehouse. Coarse particles that meet the fineness requirements are sent back to the mill for further processing.

 

Classification first and then grinding, the fly ash raw material is first coarsely and subdivided by the classifier, and the fine ash that meets the fineness requirements is directly sent to the finished product warehouse without grinding; the fine ash that does not meet the fineness requirements is sent to the mill for grinding until achieve the expected fineness.

As for what equipment is needed to build a fly ash processing plant, combined with the domestic production status, we will briefly introduce the key configuration of grinding for you: the choice of fly ash mill.

 

There are many types of grinding equipment on the market, such as Raymond mill, vertical mill and ball mill, each with its own characteristics and advantages. For fly ash grinding, you can use Raymond mill, high pressure mill and HGM ultra-fine powder mill, etc. If you are looking for higher cost performance, Raymond mill is recommended.

 

 

1. Strong system, high screening rate

The whole machine is a three-dimensional structure with a small footprint and strong system. It has an independent production system from rough processing of raw materials to transportation to milling and packaging, with fine and uniform powder quality and high screening rate;

 

2. Easy to control and maintain

The transmission device adopts a closed gearbox and a pulley, with stable transmission and reliable operation. The core components are made of high-performance wear-resistant materials, with low work loss and cost savings.

 

3. Stable transmission and high wear resistance

The electrical system is centrally controlled, and the workshop can basically realize unmanned operation. Electromagnetic vibrating feeder is used for continuous and uniform feeding, which is easy to adjust and saves fuel and electricity.