I. Product Introduction
Cast stone is a non-metallic wear and corrosion-resistant material made by processing natural rocks such as diorite and basalt, or industrial waste slag, with additives like amphibole, dolomite, and fluorspar, and crystallizing agents like chromite and magnesite, through processes such as melting, casting, crystallization, and annealing. Its 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.
Cast stone molding processes include melting and casting, sintering, and hot direct casting. Currently, cast stone products are widely used in the construction materials, chemical, metallurgical, and mining industries. Cast stone is an ideal substitute for steel, iron, lead, rubber, wood, and other materials in many equipment parts, offering high wear resistance and corrosion resistance, which are not achievable by general metals. It also extends equipment lifespan, reduces maintenance time, improves production efficiency, and lowers product costs. Cast stone has been used in anti-corrosion engineering for decades, with a history of several decades. It features a dense structure, low water absorption rate, high compressive strength, and good wear resistance. It has excellent corrosion resistance against almost all inorganic acids, organic acids, alkalis, salts, water, and organic solvents, except for hot phosphoric acid above 30°C and alkali solutions. Cast stone is a brittle material with high hardness, but its major drawback is its brittleness, making it unsuitable for heavy impact loads.
The cast stone products have a low SiO2 content, but due to the high-temperature melting process, a protective layer forms upon crystallization, which reduces chemical corrosion of the medium to near zero. This is the primary reason for the cast stone's high resistance to acid.
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 encompass curved slabs, trough lining slabs, slag channel straight channel lining slabs, etc.; special irregular slabs consist of double-curved panels, cone-shaped panels, sieve bar cast stone boards, as well as slag channel bends, variable diameter, confluence, bifurcation, and trifurcation boards. A wide variety of equipment linings, including cast stone slabs, are all included within the products of these categories.
Section 2: Application Scope
1. Power Generation Industry: Coal unloading chutes, coal bins, coal storage silos, dry coal grids, dumpers, slag removal machines, 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, chute chutes, and sieve under buckets.
4. Iron and Steel Industry: Blast furnace blending bins, sintering bins, feeders, balling machines, etc.