The processing and application of heavy slag concrete

Heavy slag: air-cooled blast furnace slag or by pouring hot water spray after treatment was called slag blast heavy slag, slag re-referred. After heavy slag crushing and screening derived 4.75mm diameter larger than the weight of slag particles, called heavy slag gravel, crushed slag concrete used to make the weight, can be used in general industrial and civil buildings and structures design strength grade C50 and C50 The following concrete, reinforced concrete and prestressed concrete. Slag and gravel production process there are two kinds of methods dike spilled hot method. After the blast furnace slag heavy natural cooling or water spray cooling in the slag or slag pit floor designated to form a more dense slag through mining, crushing, magnetic separation and screening to obtain a gravel-like material. The main crushing equipment used are: rough broken machine (jaw crusher), secondary crusher (crusher) and cone crusher, crushing machine that Sand, sand blast furnace slag production, particle size in a -10mm around. After experimental studies have shown that heavy slag crusher crusher after heavy slag gravel crushing and screening as coarse aggregate after configuration C50 following heavy slag gravel concrete, can significantly improve the workability of concrete, improve the performance of concrete.

(1) hot splash method stratified foot will pour in hot slag or slag pit floor, after pouring, spraying the right amount of water to cool the hot slag and rupture, after reaching a certain thickness, can be carried out mining, crushing, magnetic separation, screening and other processing operations, and product classification sold. This method of production process is simple, but it has many shortcomings. Currently foreign multi-use thin layers of heat-throwing method, the thickness of each layer of slag discharged for 4 ~ 7cm, 6 ~ 10cm, 7 ~ 12cm. Because thin slag release, the slag is easy to escape the gas, so greater density slag. Further, glassy mass produced slag when caving, susceptible to upper slag fully annealed, higher strength. (2) dike type method is to use hot melt slag slag tanker will be transported to the slag heap field, along both sides of the railway mention stratified dumping slag mountains to be formed, and then mined. Embankment type method is actually a method of mining slag mountains.