Development History Of Slurry Pump In China

Development History Of Slurry Pump In China

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Slurry pump as a kind of centrifugal pump, in addition to the general characteristics of centrifugal pump, but also to adapt to the diversity of transport media. Researchers at home and abroad have done a lot of research work in this field and achieved some results.

Slurry pump can be widely used in mining, power, metallurgy, coal, environmental protection and other industries to transport slurry containing abrasive solid particles. For example, transportation of mineral slurry in metallurgical concentrator, hydraulic ash removal in thermal power plant, transportation of coal slurry and dense medium in coal preparation plant, dredging of river channel, river dredging, etc. In the chemical industry, it can also transport some corrosive slurry containing crystal. First of all, about 80% of the applications in mineral processing plants are used in mineral processing plants in the mining industry. Due to the poor working condition of ore primary separation, the service life of slurry pump in this section is generally low. Of course, different ores have different abrasivity. If the relative abrasiveness of the concentrate conveying section is reduced, the overall service life of the pump will be longer. Therefore, when the general users often ask about the service life of the supplier's products in the procurement process, strictly speaking, any manufacturer will not promise an accurate service life cycle for the users without any basis, because the service life of the flow passage parts (wear-resistant and corrosion-resistant parts) depends on a variety of different factors, and the diversity and complexity of the working conditions lead to the same quality The service life of different materials is different. However, in the early stage of model selection, we can let the powerful manufacturers make reasonable design for the selection of working conditions. At present, the main power plants in China are thermal power generation and water conservancy power generation. In thermal power plants, due to the large amount of coal-fired power generation, the slag or ash after coal combustion needs to be removed. The slurry pump is used to remove the ash. After mixing a certain amount of water, the slag is transported to the place where the ash is stacked by the slurry pump. Therefore, sometimes the slurry pump becomes the ash pump in power plants. Thirdly, in the coal washing industry, due to different working conditions, large coal lump and coal gangue are easy to block, so the design requirements of slurry pump are very high. In 2005, a specially designed slurry pump was used in a coal preparation plant under Huaibei Mining Bureau to replace the slurry pump imported from Australia. It has been in normal operation so far. It can transport large coal and gangue without blockage, and its service life is longer than that of imported pumps.

In the field of seawater sand separation, the application of slurry pump is gradually recognized by customers. But in sea water sand selection, river dredging, slurry pump is more easily called sand pump, dredging pump. Although the name is different, but from the structural characteristics and pump performance principle, can be called slurry pump. Therefore, in this sea water sand selection, we often call it sand pump, which is used to be called dredging pump in river dredging. Slurry pump is widely used, but the correct application is very important. Because of the limitation of the name of slurry pump, some people who are not in the industry misunderstand it. In fact, slurry pump, impurity pump, dredging pump, desilting pump are all used in the application of slurry pump.

At the beginning of the 20th century, with the acceleration of the world's industrialization process, centrifugal pump was put forward higher requirements, and then the slurry pump specially used for conveying the medium containing solid particles began to appear. The emergence of slurry pump meets the needs of many industries, but due to the diversity and complexity of conveying medium, the theoretical research of slurry pump mainly focuses on the selection of wear-resistant materials, the optimization of pump structure design and the adoption of advanced manufacturing technology, so as to improve the quality of the pump, reduce the manufacturing cost and enhance the market competitiveness of products.

The development of slurry pump technology in China has experienced the process of introduction, digestion and absorption and independent development. In the early days of the people's Republic of China, with the acceleration of national construction, the demand for all kinds of centrifugal pumps is increasing. In the 1950s, hundreds of pump factories were established in China to produce various types of centrifugal pumps. At this time, the technology of the former Soviet Union and other countries was mainly introduced. From 1950s to 1970s, the domestic research on slurry pump technology was carried out in two industries: Machinery Industry and coal industry. In the mid-1980s, in order to meet the requirements of various industries for slurry pumps and improve the technical level of slurry pumps in China, the state spent a lot of money to introduce a full set of Warman series slurry pumps from Australian Warman company, which greatly improved the technical performance of domestic pumps, and improved the operation efficiency and reliability Reliability and maintenance have been significantly improved, basically meeting the needs of most industries for slurry pumps. At present, the development of slurry pump in our country is basically based on the Warman pump, combined with the specific situation of our country to make some design improvements, and the technical performance has not been greatly improved.