Of lignite briquetting machine built F --30 years of Zhengzhou City, the test users to build a lignite mining equipment plant pressure ball machine is mainly composed of feeding part, transmission parts, molding parts. Mainly used to suppress difficult molding powder materials, which is characterized by forming pressure, the host rpm adjustable, with a screw feed device. Lignite briquetting machine can be used to suppress a variety of powder coal, iron, brown coal, aluminum, iron, oxide, carbon powder, slag, gypsum, powder, waste, waste. Widely used in refractory, power plants, metallurgy, chemical industry, energy, transportation, heating energy industries. 1. The first introduce lignite reserves of lignite coal is soft, and its properties and uses are very different and hard coal, according to international geologists predict: the world's hard coal reserves of about 6 trillion tons, accounting for coal 60% of the total reserves of lignite reserves of about 4 trillion tons, accounting for 40% of coal reserves. For rational utilization of coal resources, usually brown coal briquetting machine for repression lignite operations by pressing its materials, energy saving, easy to transport, improved utilization of lignite, with good economic and social benefits. 2. Zhengzhou build production performance of lignite briquetting machine (with adhesive) 1. Can the domestic northeast, Inner Mongolia, Guangxi, Yunnan and other places lignite briquetting or pressure the ball 2. Can coal to the coal industry, coke, coking coal and other materials for ball pressure group or pressure the ball 3. used in mining, metallurgy, refractory materials, chemical industry, as the ball relatively low material strength or pressure groups to pressure the ball. 3. lignite briquetting machine develop principles: Zhengzhou City of construction and mining equipment plant non-evaporation dehydration, high temperature and high pressure steam drying technology represented. This lignite dehydration technology is artificially manufactured coal geological conditions, a number of years to see the process of coal shortened to a few hours, by its very nature is a chemical reaction. The lignite with high temperature, high pressure steam in direct contact, so that the water is liquid lignite prolapse, no latent heat of evaporation, high thermal efficiency, the dehydration process is not spontaneous combustion of lignite, safe. In this process, there will be shrinkage lignite, coal particles but remain a block structure. In addition to the water mechanism is based on the physical form by heating liquid water evaporates from the pores of the coal particles in the process of shrinking pores shrink the exclusion of moisture, according to the difference of the thermal expansion of water, and lignite in the water removed from the pores. This reaction process, some of the hydrophilic surface functional group of decomposed brown inner and outer holes. Thereby using a chemical treatment to reduce the water absorption capacity of lignite itself. Making the water by heating and then discharged from the pores sticky weakened, or by carbon dioxide emanating from the water squeezed out. Due to the nature of this process is a chemical reaction, the destruction of surface functional groups inevitably produce some gas. This method is currently in the research stage, yet large-scale application of industrialization. Borrowed from low because of gas countercurrent drying technology, you can use dry flue gas temperature flue gas, flue gas flow and coal can be used together in the same direction into the flow downstream, resulting in high temperature flue gas downstream lignite drying technology. High temperature gas lignite lignite drying technology to ah relative to other techniques have several advantages: to avoid the partial retention of pulverized coal particles and too dry; low temperature drying of export coal products, to facilitate further cooling to prevent spontaneous combustion, flue gas recirculation amount small, easy to control the oxygen content in the flue gas; flue gas temperature is high, the reasonable control of the temperature, in terms of quality is the premise of high moisture extrusion rate, after the destruction particle surface hydrophilic functional groups, which will help improve the performance of dehydrated lignite moisture relapse.