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Precautions for daily use 1 The centrifuge should be placed on a flat and firm ground or on a laboratory bench, and tilting is not allowed; 2 Usually the centrifuge will have a registration form, please register the user, rotor, speed and time before use; 3. The centrifuge tube must be balanced with a balance, and the lid of the centrifuge tube must be closed and screwed tightly; 4. Put the balanced centrifuge tube symmetrically into the centrifugal rotor, close the lid of the centrifuge rotor, and pay attention to whether it is tightened; 5. When the centrifugation is completed, it is necessary to wait for the centrifuge to stop automatically, and it is not allowed to force the centrifuge to stop with hands or other objectsXiangtan Centrifuge Factory is located in the hometown of the great man, has long been engaged in the design, production and sales of centrifuges, welcome to consult.
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The production process of zinc sulfate is mainly composed of: 1. Zinc salt and sulfuric acid synthesis method 2, sulfuric acid leaching zinc ore 3, calcined sphalerite, etc. The pollutants produced by the various methods vary.
Method 1 may produce acid water or zinc ionized water, which can cause acid pollution or heavy ion pollution; Method 2: Acid water or contamination of other metal ions, especially heavy metal ions, may be produced due to the impurity of zinc ore; Method 3 may produce solid waste that is difficult to dispose of, and polluting gases such as sulfur dioxide and ammonia may also be produced during calcination; Finally, heat will be used in all industrial production processes, and energy is required for combustion, which causes acid rain gases and greenhouse gas emissions, which have serious harm to the atmosphere.
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The production process of zinc sulfate monohydrate: zinc oxide rinsing, zinc oxide + sulfuric acid, medium leaching reaction, coarse filtration, adding double itch water + iron removal, adding zinc oxide, adjusting pH value, pressing filtration, adding zinc powder, removing cadmium, pressing filtration, multi-effect evaporation, concentration crystallization, centrifugal dehydration, drying, packaging.
Changsha Ruiqi Chemical Co., Ltd. cooperates with reputable large manufacturers in the raw material procurement of zinc sulfate monohydrate, and after the raw materials are purchased into the factory, the raw materials are inspected first, and then the raw material warehouse is coded and stacked for quality tracking in the future. In 2007, Ruiqi purchased the world's most advanced production equipment and testing equipment for zinc sulfate monohydrate to provide customers with the best quality products and services. Before production, the raw material zinc oxide is rinsed; In the production process, the use of multi-effect evaporator and hot air dryer for evaporation and drying, environmental protection and efficiency, after the completion of the product, with atomic absorption spectrophotometer and polarography analyzer to the finished product inspection, inspection can be qualified before leaving the factory.
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If you buy a good centrifuge, you can pay attention to Hunan Hana centrifuge. It has many and complete models, and its strength is not to be underestimated, and the response is very good. It is undeniable that this is a brand centrifuge for the best jujube mill, which is extremely convenient to use.
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1. The difference in internal control content:The zinc content of zinc sulfate monohydrate powder is more than 35%, while zinc sulfate powder heptahydrate is above. The zinc content of zinc sulfate monohydrate granules is more than 33%, and the zinc content of zinc sulfate heptahydrate granules is more than 21%.
The granules are made of powder through disc granulation, and the zinc content is lost, so the zinc content of the granules will be lower than that of the powder.
2. The difference between water solubility:In general, the water solubility of zinc sulfate heptahydrate is better than that of zinc sulfate monohydrate because zinc sulfate heptahydrate contains 7 water molecules inside. However, in terms of production monitoring, the water insoluble matter of zinc sulfate is generally a qualified product.
Zinc sulfate monohydrate and zinc sulfate heptahydrate can be used as water-soluble fertilizers, depending on the method you use.
3. The difference between **Generally, the ** of zinc sulfate is determined according to the zinc content of the product, and the higher the zinc content, the higher the **. Therefore, zinc monohydrate powder** is more expensive than zinc heptahydrate powder.
The reason why zinc sulfate granules are more expensive than zinc sulfate powder is that the cost of manufacturing zinc sulfate granules has increased labor costs.
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1. The starch centrifuge adopts the upward suspension drive mode, and the bearing and spindle only bear the weight of the rotor, and do not bear the huge radial thrust, so the life of the bearing and the stove missing spindle is greatly improved; 2. The diameter of the drum and disc is large, the processing capacity is large, the material stays in the drum for a long time, and the separation effect is good; 3. The nozzle with cam lock is used for the hidden slip argument, and the nozzle tail adopts a patented special-shaped groove, which makes the replacement more convenient, the nozzle will not be damaged due to disassembly, and the aperture is large and not easy to block, which ensures the continuous work of the separator; 4. High-precision bearings are adopted, and equipped with automatic lubrication system to ensure the accuracy and reliability of lubrication, among which the MH36 centrifuge adopts water cooling system for the first time in China, which can effectively control the temperature rise of the bearing operation, avoid the impact of high temperature on the performance of the lubricating oil, effectively ensure the lubrication conditions of the bearing, improve the operation stability, and prolong the service life of the bearing; 5. The selection of high-quality transmission belts ensures the service life and reliability of the work; 6. In order to improve safety, the starch centrifuge monitors the vibration of the rotor, the plumb of the spindle and the speed of the spindle, records all changes, and alarms when necessary, so that the operator can more easily grasp and understand the status of the equipment, which can effectively ensure the safety of man and machine; 7. It has an advanced lubrication system, which can effectively control the lubrication state and temperature rise of the bearing, so as to ensure the continuous and stable operation of the equipment; The separator has perfect safety protection facilities; 8) The automatic control system can be configured, which can monitor the operation status of the equipment in real time and record the operating parameters, which is convenient for the operator to analyze and study to improve the operation level; 9. Because the rotor adopts higher precision dynamic balance requirements, it ensures more stable operation; 10. A temperature sensor is set up at each bearing point, so that the running status of the bearing can be understood at any time; 11. The hydraulic cylinder column support method is adopted, which is more convenient for cleaning the disc.
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Centrifuge is the use of centrifugal force to separate the solid and liquid wheel components in the suspension and emulsion, the material under the action of centrifugal force, the liquid contained in the material through the filter medium and the hole on the drum wall is thrown to the inner wall of the shell, after the collection by the filtrate out of the Tongkou to discharge the leakage, and the solid phase is left in the bowl, so as to complete the separation process of centrifugal filtration.
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It mainly depends on the nature of your materials and the requirements of your own production environment. Take the vertical centrifuge as an example, such as materials: if the corrosion is strong, you can choose the drum and important parts of the corrosion-resistant materials, such as Hastelloy, other parts for anti-corrosion lining, or the overall lining, general materials, choose iron lining, or SUS304, 316, 316L, etc.
According to the environmental conditions, it is also necessary to choose whether it is anti-corrosion and whether it is explosion-proof. Wait.
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Precautions for the use of centrifuges:
1.The centrifuge should always be in a horizontal position, the voltage of the external power supply system should be matched, and a good grounding wire should be required.
2.Before starting the machine, check the machine cavity for foreign objects falling in.
3.The sample should be pre-equilibrated When using a centrifuge microcentrifuge, the centrifuge tube and the sample should be balanced at the same time.
4.When centrifuging volatile or corrosive liquids, a centrifuge tube with a lid should be used and the liquid should not leak out to avoid eroding the chamber or causing accidents.
5.After each operation, the use record should be made, and the performance of the machine should be overhauled regularly.
6.If any abnormal phenomenon is found during the centrifugation process, the power should be turned off immediately and reported to the relevant technical personnel for maintenance.
7.Clean the chamber regularly.
8.Observe the principle of left and right hand separation when using a centrifuge and operate the instrument with only the right hand.
9.When using a refrigerated centrifuge, in addition to the above items, you should also pay attention to wiping the chamber gently, so as not to damage the temperature sensor in the chamber.
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