Calcium Carbide Production Of Prepared Anthracite Formed Coke Process

With the development of the level of integrated mining and increase the proportion of lower coal group mining, increasing powdered coal content, and line-haul, there is a large part powdered coal in users, resulting the increasing of the conflict between lump coal shortage and large backlog.Coke products in our non-national standard, and technological secrets, no communication, not public, largely restricted the coke technology.Yunnan is a major province of coal resources. The large backlog of powdered coal and difficult to use has become a problem. There is an important significance in researching the method which make the powdered coal to coal or coke and industrialization.The production of calcium carbide with lime and carbon material (coke, anthracite, petroleum coke, etc.) as the main raw material in the calcium carbide furnace, relying on high-temperature melts reaction of arc formation of calcium carbide. Resource-poor areas in the coke, coke production of calcium carbide can be used as alternative raw materials with a reducing agent is one.This paper describes the province to the anthracite powder as raw materials with suitable adhesive, by bonding, compression molding, and then be formed coke by carbonization, making it suitable for high-quality electric furnace production of calcium carbide reluctant for the realization of industrialization, technology and theory lay the basis for the operation; through the energy balance calculation to determine the choice of charcoal stove and the overall design process.Testing process mainly adhesive forming tests at high temperature carbonization, coke quenching test. Bond forming tests including organic binder, calcium, inorganic adhesive series pilot; preparation of composite adhesive for bonding test; use coking coal and organic binder mixed with coke test. Carbonization coke quenching study investigated the carbonization temperature, heating rate, coke quenching methods on the quality of coke products.Test showed that the organic binder of coal cold and high intensity; inorganic binder for briquette cold low intensity; calcium series of composite adhesive tests to ensure coke in certain cases, high temperature strength of adhesive on behalf of the people The ash is too large, hard coke products as raw materials for calcium carbide production. Blending a small amount of bituminous coal and anthracite in the organic binder by kneading, molding, carbonization temperature indicators available to meet the coke product. That is, when blended with 15%-20% of anthracite in the bond index GR-I was 78 the prime coking coal, while 2% starch binder compression molding, the temperature above 900℃, charring time 2h, get coke products strength and industrial ingredients for the production of coke to meet the requirements of calcium carbide.This thesis is determined through constant energy effect, through the way of coking market investigation and determines the type of coking furnace, through the process of practical industrial production design to make production instruction. The process used by this experiment is simple, low investment, low cost and wide adaptability of raw materials.The formed coke which adopts this method has high compressive strength, low volatile matter, fixed carbon content, can fulfill the quest of production of calcium carbide.