Research Status and Development Trend of Coal Slurry Dryer at Home and Abroad
Slurry dryer market disorderly competition: China's slime dryer manufacturers are mixed, some companies have a high starting point, adhere to the road of scientific and technological development, and play a catalytic role in the development of the industry; but there are also less investment and low technological content. "Miscellaneous military", with a large number of low-quality, low-cost equipment to squeeze the market, not only affects the overall image of the industry, but also caused the domestic dryer price "infighting", a price war. The vicious competition of enterprises has largely offset the profits of the industry. Slime dryer companies have no giants and few product types: China has a large number of slime dryer equipment manufacturers, but few companies have large production scale. In addition, the types of dryers produced in China are only 30-40% foreign. Although some equipments have replaced imported products, they still cannot meet the needs of the market; the product structure is single; high-end products can only import foreign products, but the price is about three times that of foreign countries. Slime dryer product quality is mainly in the middle and low: At present, China's products dominate the market in the low-tech products. With the influx of some high-end products from foreign companies, the dryer industry in China is facing enormous competition pressure. Slime dryer technology development capability is weak: China's dryer equipment manufacturers have low innovation capability, and there are fewer companies that have been able to launch new technologies and new products with independent intellectual property rights. This is the development of dryer technology in China. The main reason for the slowness. All along, China's dryer equipment manufacturers have low R&D investment, or no input at all; new product development efforts are small and varieties are few, and most of them maintain the status of mutual imitation. There are fewer companies that have strong comprehensive strength and can play an active role in promoting industry development and playing an active role in industry self-regulation. Slurry dryer in the past the introduction of the structure of foreign rotary dryer, also used a single L-shaped lifting plate. The proportion of coal and pulverized coal in the raw coal has gradually increased. This is because the level of coal mining mechanization has increased. The amount of raw coal slime from the thermal coal washing plant and the flotation tail coal from the coking coal washing plant has been greatly increased. As a by-product of the washing process, slime has the characteristics of fine particle size, strong water holding capacity, high ash content, and high clay content, which brings a lot of inconvenience to the comprehensive utilization of slime. At present, most of the coal slime from the processing plant is sold to local farmers at a low price, which not only pollutes the environment but also causes waste of resources. The economic value of coal slime has not been fully tapped. In the face of increasingly depleted coal resources and high coal prices, the desiccation and reuse of coal slime is imminent. The new process and new technology for drying coal slime is to solve the problem that coal slime cannot be synthesized due to high moisture content (20% ~ 30%). Lee. 2 BURNER TEMPERED GLASS 2 BURNER TEMPERED GLASS GUANGZHOU AIJINGSI TRADING LIMITED , https://www.aichugashob.com