This project uses blast, slag and dolomite as main raw material ,and coke as fuel. Qualified raw materials are automatically weighed according to proportion, and then are put into cupola by hoist and conveyors. Crushed aggregates are sent out by belt conveyors.

Raw materials are melted in cupola. Waste gas produced by cupola is discharged into waste gas treatment system. Waste gas is discharged outside after dust removal, incineration, heat exchange and desulfuration. Combustion air for cupola is preheated by preheating system, added with oxygen, and then is blown into cupola. Raw materials are melted into melt, outflow from the bottom of cupola, pass through sluice and flow into spinner for fiber forming.

Spinner is consisted with spinning rollers, air ring and nozzles around. Melt flowed into cupola is made into fibers with the combined action of centrifugal force of rollers and high speed stream from air ring, then is blown into fiber collection machine. During fiber forming process, separate shot not formed by the speed difference between fiber and shot. Meanwhile, apply binder uniformly on the surface of fiber when forming.

Fiber is absorbed to high speed fiber collection belt by the negative pressure of fiber collection machine, and forms a thin preliminary mat. The preliminary mat passes conveyor and is sent into pendulum and with the help of forming conveyor, forms secondary mat. According to the product requirements, set the parameters of fiber collection belt and pendulum.

Main production line speed is controlled by weighing system to meet the density required.

Prior curing oven, there are crimping machine and pressing machine, which are used for longitudinal compression on secondary mat, change fiber distributed structure, and enhance product strength.

Fiber mats enter into curing oven, mats are sized by the two flights in curing oven. Meanwhile, hot air is blown into, which cures binder, and forms board and mat with certain thickness and strength.

Boards and mats come from curing oven pass through cooling conveyor, length cutting conveyor, on-line slitting, edge trimming conveyor, cross cutting conveyor and pendulum saw, and are made into finished product.

Rock wool products pass through automatic stacking machine, automatic film wrapping machine and robot palletizer, then are sent into warehouse by forklift.