Rock wool can be used at the highest temperature of 820 ~ 870℃, long fiber, chemical durability and water resistance is better than slag wool. Rock wool board is in the rock wool fiber to add an appropriate amount of binder, dustproof agent, detest agent and other additives, after pressing and curing. According to the production process, rock wool board can be divided into subsidence method rock wool board, pendulum method rock wool board and three-dimensional rock wool board.
Here we look at the specific methods of three production processes of rock wool fiber insulation.
Sedimentation, the main production process of the sedimentation is the high temperature melt is forming rock cotton fiber through the centrifugal blowing, the settling chamber accumulated on the conveyor belt, reaches a certain thickness, through the pressure roller into curing furnace. The fiber of Sedimentation method rock wool is plane distribution, density and uniformity of binder is poorer, affect the compressive performance of a plate and the bonding strength between the layers.
Pendulum method, pendulum method is based on the Sedimentation method, by improving the cotton collection method, first by the collection belt to collect a thin layer of rock wool, the pendulum layer by layer, to reach a certain number of layers and thickness, and then pressed by the pressure roller, and curing in the curing furnace, and then through cooling, cutting, packaging and other processes into the finished product. This method improves the uniformity of the cotton layer and the binder contained in it, and the fiber is partially vertically distributed due to the slope generated when the cotton is stacked, so the compressive strength and inter layer bonding strength are improved.
3 D method, 3 D rock wool is to change the distribution direction of the uncured rock wool layer stacked by pendulum method through mechanical methods, so as to form a high strength of 3 D rock wool products, 3 D rock wool fiber is three-dimensional distribution, high compressive strength, not easy to stratify and peel.
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