The invention relates to a system for asbestos neutralization, that comprises a neutralization unit comprising, in an atmospheric containment: a module for sorting of asbestos waste, an asbestos waste grinder, which reduces the size of the asbestos waste to a dimension ranging from one-tenth of a millimeter to one millimeter, a concentrated sulfuric acid tank, a vat containing a hot diluted acid solution, for which temperature is between 70 C. and 100 C., in which grinded asbestos waste containing asbestos is dipped, said solution neutralizing asbestos contained in the grinded asbestos waste, a filtration unit to separate, at the end of the neutralization reaction, a solid inert waste from a liquid phase of the diluted acid solution, a regeneration unit for the diluted acid solution, which adjusts the hydrogen potential of the extracted liquid phase by adding concentrated sulfuric acid from the tank, and means for transferring the regenerated solution into the vat.

The invention relates to a system for neutralizing asbestos, said system comprising a mobile neutralization unit (200) comprising: an asbestos waste sorting module (225), an asbestos grinder (255) and a hot acid bath (250) for rendering asbestos inert. Preferably, the asbestos waste sorting module comprises: a window with glove boxes; and a conveyor for transporting the asbestos waste in front of the window. In embodiments, the system comprises a means for containing the atmosphere within the mobile neutralization unit and/or the hot acid bath (250) of the mobile neutralization unit (200) comprises sulfuric acid.

The invention relates to a system for neutralizing asbestos, said system comprising a mobile neutralization unit (200) comprising: an asbestos waste sorting module (225), an asbestos grinder (255) and a hot acid bath (250) for rendering asbestos inert. Preferably, the asbestos waste sorting module comprises: a window with glove boxes; and a conveyor for transporting the asbestos waste in front of the window. In embodiments, the system comprises a means for containing the atmosphere within the mobile neutralization unit and/or the hot acid bath (250) of the mobile neutralization unit (200) comprises sulfuric acid.

The asbestos waste neutralization device (10) comprises: an acid tank (23), a vat (16) containing a diluted acid solution, in which waste containing asbestos is dipped, with this solution neutralizing the asbestos waste, a filtration unit (21) to separate, at the end of the neutralization reaction, the solid inert waste from the liquid phase of the acid solution, a regeneration unit (22) for the attacking acid solution, which adjusts the hydrogen potential of the extracted liquid phase by adding concentrated acid contained in the acid reservoir, and means for transferring the regenerated solution into the vat.

The asbestos waste neutralization device (10) comprises: an acid tank (23), a vat (16) containing a diluted acid solution, in which waste containing asbestos is dipped, with this solution neutralizing the asbestos waste, a filtration unit (21) to separate, at the end of the neutralization reaction, the solid inert waste from the liquid phase of the acid solution, a regeneration unit (22) for the attacking acid solution, which adjusts the hydrogen potential of the extracted liquid phase by adding concentrated acid contained in the acid reservoir, and means for transferring the regenerated solution into the vat.

The present disclosure relates to a fiber-reinforced cement sheet product. The fiber-reinforced cement sheet product comprises at least one fiber-cement layer and at least one polymeric material layer. The polymeric material layer is chemically bonded to at least one surface of the fiber-cement layer or is sandwiched between two fiber-cement layers, to obtain the fiber-reinforced cement sheet product. The present disclosure further relates to a process for preparing the fiber-reinforced cement sheet product.

The present disclosure relates to a fiber-reinforced cement sheet product. The fiber-reinforced cement sheet product comprises at least one fiber-cement layer and at least one polymeric material layer. The polymeric material layer is chemically bonded to at least one surface of the fiber-cement layer or is sandwiched between two fiber-cement layers, to obtain the fiber-reinforced cement sheet product. The present disclosure further relates to a process for preparing the fiber-reinforced cement sheet product.

A full-fiber burner brick and a preparation method thereof, comprising mixing alumina crystal fiber and amorphous ceramic fiber with both of them being a combination of fibers of different lengths gradations, and moreover adding fine powder fillers of different particle size gradations and supplementing other additives. This enables the internal structure of the product more uniform, increases the bulk density of the product, and also benefits the suction filterability of fiber cotton blank, and is conducive to forming and improving the strength of the blank. The surface of the brick body is further provided with a coating, which can effectively protect the cotton fiber of the brick body fiber from harsh environments, improve its high temperature resistance, and help to extend the service life of the burner brick.

A full-fiber burner brick and a preparation method thereof, comprising mixing alumina crystal fiber and amorphous ceramic fiber with both of them being a combination of fibers of different lengths gradations, and moreover adding fine powder fillers of different particle size gradations and supplementing other additives. This enables the internal structure of the product more uniform, increases the bulk density of the product, and also benefits the suction filterability of fiber cotton blank, and is conducive to forming and improving the strength of the blank. The surface of the brick body is further provided with a coating, which can effectively protect the cotton fiber of the brick body fiber from harsh environments, improve its high temperature resistance, and help to extend the service life of the burner brick.