Crop essential nutrients 16 species, in addition to carbon hydroxide is absorbed from the air, the rest were fertilization require varying degrees to meet the needs and crops. According to the amount of nutrients required by crops, it is divided into a large number of elemental fertilizers, including nitrogen, phosphate and potash; medium amount of elemental fertilizers, including calcium, magnesium and sulfur; and trace element fertilizers, including zinc, boron, manganese, molybdenum, iron and copper. Fertilizer; in addition, there are some beneficial elements such as silicon-containing materials, rare earth elements and so on. At present, the market-distributed fertilizers are mainly nitrogen, phosphorus and potassium fertilizers, and there are many varieties of each fertilizer. The main nitrogen fertilizer varieties are; urea, ammonium bicarbonate (ammonium bicarbonate), ammonium chloride, ammonium sulfate, ammonium nitrate, calcium nitrate, as well as ammonia water, lime nitrogen, etc. are also nitrogen fertilizer, but it has been used less. Calcium nitrate is used both as a nitrogen fertilizer and as a calcium fertilizer. The main phosphate fertilizer varieties are superphosphate ( calcium ), heavy superphosphate (heavy calcium, also known as double material, three-material superphosphate), calcium magnesium phosphate fertilizer, in addition, phosphate rock powder, steel slag phosphate fertilizer, defluorinated phosphate fertilizer, bone powder is also Phosphate fertilizer, but the current amount is small, and the market is rare. The main potash varieties are potassium sulfate, potassium chloride, salt lake potash, kiln ash potash and grass ash. Potassium sulfate and potassium chloride wherein the pure components, the circulation of the market are mostly imported fertilizer, produced QSLP of Qinghai, the main component is potassium, kiln dust, ash and potash components is very complex, more market liquidity The first three potashes are less. There are many varieties of trace element fertilizers. The most commonly used boron fertilizer is borax, zinc fertilizer is zinc sulfate, manganese fertilizer is manganese sulfate, molybdenum fertilizer is ammonium molybdate, copper fertilizer is copper sulfate, iron fertilizer is ferrous sulfate and some organic With the deepening of agrochemical research, the application of mixed iron fertilizers has become more and more widespread. Simultaneously fertilizer containing nitrogen, phosphorus and potassium fertilizers into two or more points, into two categories, according to the compound fertilizer and compost manufacturing method. The most common fertilizer is diammonium hydrogen phosphate (AP), in addition to urea ammonium phosphate, ammonium phosphate nitrate, ammonium phosphate, sulfur, phosphate nitrate, diammonium phosphate, potassium nitrate and the like. When using compound fertilizer, it is necessary to adjust the proportion of nutrients to meet the requirements of different crops and soils. Mixed fertilizers, it is conditional several single crop fertilizers and soil flexibly formulated into various specifications, mechanical mixing method of preparation, currently on the market are mostly special fertilizer such fertilizers. In addition, various liquid fertilizers and spray fertilizers currently on the market are also a mixture of various nutrient elements and some organic components such as amino acids, which have certain effects on improving crop yield and quality. Lobe Pump In Paper Making Industry Paper making lobe pumps are widely used to transfer PAM, starch slurry, liquid rosin, rosin gum. paper slurry, dry-strength agent, wet-strength agent, sizing agent, defoaming agent, coloring starch, coating and so on. professional Rotary Lobe Pumps,Paper Making Transfer Lobe Pump,Pumps for Paper and Pulp Industry NINGBO DURREX PUMPS CO.,LTD , https://www.durrexlobepump.com
We have cooperated with UPM, STORA ENSO, Ning Dragons Paper, OJI paper, Lee & Man paper, APP paper and so on for many years. Lobe pump is very well used in the industry and it has gradually replaced the screw pump in many working conditions of paper making industry. Lobe pump maily used following positions.
Preparation of starch glue and feeding and conveying of starch.----S.S. lobe pump
Coating preparation and coating feeding and transportation.----S.S. lobe pump
Chemical unloading and chemical addition.----S.S. lobe pump
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