【Ten Years of Rapid Development in Chemical Engineering Equipment】The silicon carbide shear pump series from 1987 to 2023 has now been fully domestically produced
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Ten years of rapid development in chemical engineering equipment – praise for the prosperous and strong China. This is just a starting point; more participation from everyone will make things even more lively. Haichuan becomes even better with your involvement; we welcome everyone to take part more actively in the forum discussions. ********************************************* On March 10, 2023, in the production workshop of Luoyang Jiasnuo Pump Manufacturing Co., Ltd. in Henan Province, operators were carefully carrying out various tests on the industrial pumps they produced. Once these pumps passed the testing, they would be shipped to the site where the sponge titanium project in Gansu is being built. “The new type of silicon carbide industrial pump we produce can compete with imported products. Companies such as Longbai Group and China National Titanium White Group use pumps manufactured by our company. ”Jiang Jilun, general manager of Luoyang Jiasnuo Pump Manufacturing Co., Ltd., explained that the industrial pumps produced by this company are made from a new type of silicon carbide composite material. Since they are completely different from traditional metal pumps and polyethylene pumps made from polymer materials, they are colloquially referred to in the industry as “stone” industrial pumps. It is said that industrial pumps are primarily used to transport materials such as air, water, and slurries. Acting like a beating heart, they enable the transfer of these materials through pipes to various locations. In the production of industries such as the chemical sector, the pump bodies of industrial pumps must not only withstand the impact and friction from various mineral particles in the liquid, but also resist severe corrosion by acidic and alkaline liquids. Conventional metal pumps are wear-resistant but not resistant to acid and alkali corrosion; polyethylene pumps made of polymer materials are highly resistant to corrosion but not wear-resistant. Finding a way to combine these two advantages is an urgent problem that needs to be solved. “Industrial pumps made of silicon carbide combine corrosion resistance with high structural strength, enabling a service life that is more than three times longer than that of traditional industrial pumps. Previously, this technology was only in the hands of a few developed countries such as Germany, with product prices often exceeding millions; domestic products did not exist at all. ”Jiang Jilun said.
As a private technology-based enterprise specialized in the research, development, and production of industrial equipment such as desulfurization pumps, mixers, and industrial pumps, Luoyang Jiasnuo has collaborated with companies like Sinosteel Luonai, Zhengzhou Sanmo Research Institute, and universities such as Zhengzhou University to carry out industry-academia research. As a result, it has developed new composite materials made of silicon carbide and carbon fiber; the hardness of these materials is comparable to that of diamond. This has solved the technical challenges associated with transporting special materials, allowing them to serve as effective substitutes for imported equipment. Luoyang Jiasnuo is now one of the few companies that possess the technology for mass-producing industrial pumps made from silicon carbide. “The silicon carbide industrial pumps produced by our company cost only 1/5 of those imported from similar manufacturers, and demand for these products far exceeds supply once they are released on the market! ” Jiang Jilun said that the sulfurization pumps produced by this company use new types of composite materials for their volutes, impellers, pump covers, and locking nuts. Their resistance to chemical corrosion and wear is far superior to that of traditional high-quality chromium-nickel alloy steels or nickel alloy materials, and their temperature resistance is also higher than that of existing polyethylene materials. These pumps are particularly suitable for harsh operating conditions; when used in industrial desulfurization pumps, they help solve technical challenges in industries such as power generation, chemicals, metallurgy, and titanium dioxide production. At present, Luoyang Jiasnuo Company has become a qualified supplier to China’s five major power groups, as well as companies such as Sinopec, CNPC, Longmang Bailian, CITIC Titanium, Chaoyang Jinda Titanium, Baotai Huashen, and Lubei Group.
To avoid being held back by technology or eliminated by the market, one must not be content with the status quo. To date, the company has filed for 6 patents, and the second-generation pumps developed using new technologies are about to be launched on the market. Compared to the first generation, these second-generation pumps can operate at much higher temperatures, with a hardness level close to that of diamond. At present, the company will also rely on its core technologies to expand production capacity in order to meet market demand. ”Jiang Jilun said. This year, the company invested over two million more to purchase a set of high-precision production equipment ； In terms of manufacturing processes, a new pressure-based production line has been added. The products produced with this line have a smooth and even surface on the outer layer, as well as excellent density in the inner layer. Their resistance to corrosion and wear is nearly 30% higher compared to those made using the traditional casting method, which extends the product’s lifespan and reduces the frequency at which customers need to replace parts. Thus, the entire usage period of these products is hassle-free. In terms of product categories, the newly developed silicon carbide shear pump series has replaced the imported models of high-end quality, enabling their full localization; these pumps are now in mass production ； Through coordination and discussions with Longbai Group’s **Technology R&D Center, as well as bold production experiments, the impeller blades and cyclones were optimized to be made of silicon carbide. This solution addressed the issue of balancing corrosion resistance and wear resistance for customers; the service life of these components increased by 3–5 times compared to those made of metal. This represented another breakthrough for the new product, and the company became the first supplier in the country to produce it.
Industrial pumps made of silicon carbide combine corrosion resistance with high structural strength, enabling a service life that is more than three times longer than that of traditional industrial pumps.
Silicon carbide composites address the issues of acid and alkali resistance as well as wear resistance, thereby extending the service life of pumps.