cement kiln refractory castable has burst reason generally has 4 kinds: one is the cement production enterprise production task, a nissan 5000 tons of cement production line, a day of production is about 1 million yuan, so most of the cement factory has maintenance need to grab the time, in order to open the kiln, have to compress castable maintenance and baking time.
in order to improve the operation efficiency and production efficiency of rotary kiln and reduce the production cost, most cement production enterprises have the problems of heavy production task and short time for stopping kiln maintenance.
of cement production enterprises, repair, overhaul time control in 8~15 days, china cement kiln using low cement water hardness with a series of refractory material, its construction and maintenance and baking must meet a certain period, so in the short time, fast drying kiln case easy to burst phenomenon of castable castable, especially some special auction, burst in feeding baking in the production line, to stop the kiln pouring back, bring unnecessary losses to enterprises.
crack reason generally has 4 kinds: one is the cement production enterprise production task, a nissan 5000 tons of cement production line, a day of production is about 1 million yuan, so most of the cement factory has maintenance need to grab the time, in order to open the kiln, to compress the castable maintenance and baking time.
two is currently china's cement kiln refractory castable material with sio2 and al2o3 system, which is bonded with aluminate cement based fast hardening and high strength cement, which requires the castable after construction is sufficient and reasonable curing time of baking system, the length of time required.
three is an overhaul of china's cement industry basically commissioned furnace construction company for the construction team, professional level, whether the specification will be the construction quality and the use effect of castable refractory effect.
four is some special parts such as cement kiln, kiln, kiln hood before, cooler top and side walls so that the problems are difficult to bake. for these sites, some cement enterprises do not need wood to bake at all, some enterprises only bake for a short time. in the kiln burner stage, because the cement kiln control parameters, heat flow at a certain speed to the kiln system propagation and radiation, and the kiln hood and cooler only part of heat radiation, not enough to make this part of heat free water pouring material in fully discharged, began to feed production in the system, hot air flow in the short time to return the kiln head, at the same time, the high temperature clinker began piling up in the kiln hood, resulting in kiln hood, refrigerator parts temperature rises rapidly, at this time, the most prone to castable burst off phenomenon.
the factors above the cement manufacturers in the maintenance period caused by the burst of castable is more outstanding, in our country every year because of cement castable explosion-proof measures do not, the baking system is not reasonable, resulting in kiln hood, cooler castable burst and collapse.
