Industrial pump products are the main equipment for transporting fluid medium. Different medium concentrations, different pH, particle size and many other factors affect the normal operation of the pump. Pump selection is very important. It affects the production costs, labor intensity and other issues, is directly related to the production can be carried out normally. Especially chemical, smelting, mining, pharmaceutical and other industries, the delivery process has a stable, balanced, no leakage and other special requirements for the pump more demanding. China Gold Henan Sanmenxia Zhongyuan smelter in recent years continue to expand the scale of enterprises, production can be balanced and stable, sulfuric acid production and non-ferrous metal smelting industry to occupy a place, the key is to streamline the production process, to solve the past opened to stop , Equipment accidents continue to be taboo for other industries, mainly due to the introduction of the process used in the transformation of Delasco series of imported hose pumps. The continuous and steady development of production depends on the continual improvement of the technological process, the application of advanced science and technology and the effective equipment in the process of transformation, and the equipment runs through the whole process. And then advanced technology, there is no match with the equipment to achieve is vain. First, the background of the introduction of the hose pump People's awareness of environmental protection and awareness of cost-saving to improve, 94 in the early construction of an old sulfuric acid plant process transformation, the production of sulfuric acid in the past to a transfer of two to two Suction, increase sulfur dioxide recovery. SO2 conversion rate increased from 96% to over 99%, SO2 in the tail gas reached the national emission standard, and the dry feedstock was changed to pulp feedstock to solve the problem of flying dust loss. The gold concentrate powder (-200 mesh 60%) add water to the concentration of 65-70%, and then hit the pump to the boiling fluid slurry distribution tank and then into the boiling furnace roasting. Pump improper selection, it is difficult to ensure that the boiling furnace balanced, stable feedstock, production has been open to stop, the scene of pulp flow everywhere, serious metal losses, workers too much labor, miserable, high cost, winter production is more difficult. In-depth research, similar foreign companies have adopted hose pump feed, there is also a domestic use of slurry feed enterprises to introduce a hose pump, equipment and spare parts are expensive, buy a pump from abroad longer cycle. Purchasing pumps from foreign markets is not possible, only for the domestic market, after many visits, we purchased in April 95 two of the earliest hose pumps for boiling furnace feed, the effect is good. The introduction of the pump to solve the other pumps can not solve the problem, while its light, inexpensive, no leakage, low maintenance costs by the majority of cadres and workers welcomed. Second, the use of hose pump Boiler achieve continuous equilibrium, stable feed, to ensure that the sulfuric acid system driving rate. However, after the residue needs further extraction of gold and silver copper and other metals. Can not balance the same control of the production of the normal conduct. 1. Acid leaching section acid dip tank used diaphragm pump, centrifugal ceramic pump, centrifugal engineering plastic pump solidification ratio of about 1.5: 1, containing sulfuric acid 3-4g / t, the proportion of 2.05 acidic medium sent to the thickener settlement, the effect has not Ideally, acid dip tank slurry emissions caused by the dust collection system blocking materials, equipment accidents may occur. Once the discharge pump is broken, it is impossible for the boiling furnace and the dust collection section to stop for a short period of time without discharging the material to the acid leaching tank. Incidents such as the twist shaft and the broken shaft of the acid leaching tank also occur from time to time. To change this situation, analysis and practical application comparison, we chose Delasco series of hose pumps, the effect is very satisfactory, to achieve a continuous balanced feed, but also reduces maintenance costs and labor intensity. 2. Acid leaching thickener and cyanide thickener deposit and discharge balance issues. Since the feeding is realized by the continuous and uniform hose pump, the discharging must also be realized by the hose pump, otherwise the thickened material will easily lead to mechanical accident and the maintenance worker will increase the workload, causing the operator to dig in the thickener phenomenon. The use of hose pumps, control of the material out of balance, feed pump speed and pump speed pump specifications in proportion to the inverter adjusted to ensure uniform flow, to achieve balanced production. 3. Reflecting the advantages of scale, the multi-layer thickener after washing the tailings to be transported together to carry out dehydration treatment, which conveys the slurry to make such a request, that is, whether to accept the test of long distance and high lift, we installed a 62.9 meters above sea level Taiwan hose pump, the concentration of 55% -60%, the proportion of pulp around the pulp hit an altitude of 96.5 or so position, the transmission distance of up to 2500 meters, a few years of operation proved that the pump to meet the needs of the same time rely on the hose pump its own work characteristics, Solve the pipeline "sit tube" phenomenon. 4. Hose pump sewage treatment is also more and more reflect its own advantages, with acidic wastewater need to use Ca (OH) 2 and, lime is inevitable to contain lime and limestone particles such as CaCO3, these particles can easily centrifugal pump impeller flow Road blockage, resulting in a series of problems such as parking maintenance. The hose pump is a positive displacement pump, the hose acid and alkali, are not afraid of congestion do not fight the problem. In addition, the hose pump is also used in acid sludge discharge process, in short, the hose pump has become an irreplaceable fluid medium in all types of production lines conveying equipment. Practice has proved that: diaphragm pumps, centrifugal pumps and so difficult to achieve these goals, but the hose pump is very easy to achieve. Winter production is difficult in the hydrometallurgical industry, the quarter, to improve equipment operation rate is the key to production, and automation is to raise the level of production is most important. The number of personnel can not replace the modern equipment can reach the goal, which is the same as military training, to win the local war under high-tech conditions, by the number of troops on the advantages, but also how much conventional weapons, modern technology in a sophisticated weapon. Third, the application process Attention problems: Any equipment as everything else in the world, has its own advantages and disadvantages, the first hose should be used from the beginning of the selection of equipment to pay attention to the selection of ancillary facilities. Hose pump speed control to achieve flow adjustment The key equipment is the inverter or speed motor, and speed motor maintenance due to the large amount of maintenance, failure rate and other shortcomings were replaced by frequency control technology, the correct selection of the appropriate frequency control facilities Is to give full play to the performance of hose pump is a very important part. Adopting the correct maintenance methods to prolong the service life of pumps and frequency converters is the basis for the smooth realization of the production process. First of all, to select the appropriate location to install the inverter, to avoid contact with the media such as oil, water, pulp, to prevent accidents, and secondly on the mechanical part of the equipment manual to provide methods and troubleshooting methods for maintenance. Fourth, the prospect of application of hose pump At present, our company has a total of three sets of roasting cyanide system and a direct cyanide system, as well as an annual output of 60kt sulfuric acid plant and a sewage treatment plant, a total of 42 sets of hose pumps, Among them, there are 25 sets of frequency conversion speed regulating machines and 14 sets of speed regulating motor speed regulating units. They are playing an important role in different production processes. Hose pump chemical, pharmaceutical, cement and non-ferrous metallurgy, mining and other industries, more and more users have been recognized, will continue to play its own advantages, to make its contribution to China's economic construction. V. Conclusion "Workers want good things, we must first sharpen his" fluid medium delivery in this area, especially in high concentration, high-lift production process, the hose pump will play its unique advantages, but also brought Transport fluid medium production revolution. Hose pump from scratch, never be recognized gradually understand the country has several years of history, from our own application situation, the advent of this product changed the past problems in the production process to save a lot of accidents.