I. Product Introduction
Cast stone is a non-metallic wear and corrosion-resistant material produced by processing natural rocks such as diorite and basalt or industrial waste slag. It involves adding certain additives like amphibole, dolomite, and fluorite, along with crystallizers such as chromite and magnetite, through processes like melting, casting, crystallization, and annealing. The products include plates, bricks, pipes, and various non-standard materials. These variously sized plates, pipes, and non-standard objects are collectively referred to as cast stone products.
The casting stone process includes three types: molten casting, sintering, and hot direct casting. Currently, cast stone products are widely used in construction materials, chemicals, metallurgy, mining, and other industrial sectors. Cast stone is an ideal substitute for steel, iron, lead, rubber, wood, and other materials in many equipment parts, offering superior wear resistance and resistance to acid and alkali corrosion that general metals cannot achieve. It also prolongs the service life of equipment, reduces maintenance time, improves production efficiency, and lowers product costs. Cast stone has been used in corrosion prevention projects for decades, known for its dense structure, low water absorption rate, high compressive strength, and good wear resistance. It has excellent resistance to most inorganic acids, organic acids, alkalis, salts, water, and organic solvents, except for hot phosphoric acid above 30℃ and alkali solutions. Cast stone is brittle, with high hardness, but its major drawback is its brittleness, which makes it unsuitable for withstand the impact of heavy loads.
The cast stone products have a low SiO2 content, but due to the high-temperature melting process, a protective layer is formed upon crystallization, reducing chemical corrosion of the medium to near zero. This is the primary reason for the high acid resistance of cast stone.
Cast stone slabs are categorized into three types: standard, standard irregular, and special irregular. Standard slabs include rectangular, trapezoidal, hexagonal, fan-shaped, and circular boards; standard irregular slabs consist of curved slabs, trough lining slabs, slag channel straight channel lining slabs, etc.; special irregular slabs feature double-curved panels, conical panels, sieve bar cast stone boards, as well as slag channel curved channel, variable diameter, confluence, Y-joint, and T-joint boards. The wide range of equipment linings cast stone slabs are all included in the products of the aforementioned categories.
Section 2: Application Range
1. Power Generation Industry: Coal chutes, coal bins, coal storage silos, dry coal grids, dumpers, slag catchers, water treatment, etc.
2. Chemical Industry: Corrosion-resistant flooring, pump foundations, etc.
3. Coal Industry: Wear-resistant linings for coal storage, gangue storage, medium barrels, scraper conveyors, bucket elevators, chutes, and screen under funnels, etc.
4. Iron and Steel Industry: Blast furnace mixing bins, sintering material bins, feeders, balling machines, etc.