What companies are developing aluminum foundry independently in China?
Quan Zhou Jing Long Machinery Co., Ltd. always pays attention to customers. According customers' actual needs, we could customize comprehensive and professional solutions for them. copper melting furnace produced by Jing Long Machinery Company is applied to the following industries. Jing Long Machinery Company's aluminum foundry have reasonable structure, novel design, and reliable quality. With a small noise, they are easy to operate and are stable during the operation. For product information, customers are welcome to consult Jing Long Machinery Company. According to the material, we's products are divided into several categories, and gravity die casting is one of them.
What is the filtration accuracy of the RO film? Matters needing attention1. the box for storing membrane elements should be kept at normal temperature to avoid direct sunlight. If the polyethylene bag is damaged, a new protective solution (sodium bisultan) should be added to the bag to avoid air drying and prevent biological growth.2. the water produced after one hour of membrane operation needs to be discharged.3. when storage, transportation and system shutdown, the original film must be immersed in the protective solution to prevent biological breeding and avoid freezing. The standard storage solution contains sodium bisultan and sodium bisultan (food grade) of 1% weight ). For short-term storage (within a week or a week), a 1%-weight sodium bisultan can prevent biological growth.4. once the original film is wet, it should always be moist.5. the operating pressure should be equal to or not less than the inlet/concentrated hydraulic pressure. Membrane damage due to back pressure during operation is not
[High school chemistry] filtration is one of the operation methods for separating solution and solid insoluble matter. The sediment needs to be washed if necessary. Add a small amount of distilled water to the filter No idea what the availability is, it should be soluble impurities. 'Availability' should be soluble, and 'soluble impurities' are other substances that can be dissolved in water and attached to precipitation. For example, filter calcium carbonate precipitation and calcium hydroxide solution, and wash out calcium hydroxide attached to the surface of calcium carbonate after filtration. at this time, calcium hydroxide is a 'soluble impurity '. If you don't understand, it should be a typo. it is an impurity soluble in water. after washing, it can be dissolved in water and separated from sediment. It's obviously a typo, soluble impurity! The title is wrong. it is soluble impurities.