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The quality of water not only has a great influence on the product quality of pretreatment and other processes, but also affects the consumption of dyeing and chemical materials and auxiliaries. The   manufacturer of sodium hexametaphosphate in China   tells you that in textile printing and dyeing industry, sodium hexametaphosphate is a good softener, which makes the dye or soap powder not precipitate or agglomerate. The standard for distinguishing soft water from hard water is as follows: soft water 0-57ppm, slightly hard water 57-100ppm, hard water 100-280ppm, extremely hard water>280ppm. Calcium and magnesium salts in hard water are unfavorable to printing and dyeing. For example, they react with soap to form insoluble calcium and magnesium soap, precipitate on fabric, and form insoluble scale in alkaline solution, which is attached to pretreatment equipment (such as groove inner wall, valve and guide roller), hindering normal production. When the amount of iron and mang...

The quality of water not only has a great influence on the product quality of pretreatment and other processes, but also affects the consumption of dyeing and chemical materials and auxiliaries. The   manufacturer of sodium hexametaphosphate in China   tells you that in textile printing and dyeing industry, sodium hexametaphosphate is a good softener, which makes the dye or soap powder not precipitate or agglomerate. The standard for distinguishing soft water from hard water is as follows: soft water 0-57ppm, slightly hard water 57-100ppm, hard water 100-280ppm, extremely hard water>280ppm. Calcium and magnesium salts in hard water are unfavorable to printing and dyeing. For example, they react with soap to form insoluble calcium and magnesium soap, precipitate on fabric, and form insoluble scale in alkaline solution, which is attached to pretreatment equipment (such as groove inner wall, valve and guide roller), hindering normal production. When the amount of iron and mang...

The quality of water not only has a great influence on the product quality of pretreatment and other processes, but also affects the consumption of dyeing and chemical materials and auxiliaries. The   manufacturer of sodium hexametaphosphate in China   tells you that in textile printing and dyeing industry, sodium hexametaphosphate is a good softener, which makes the dye or soap powder not precipitate or agglomerate. The standard for distinguishing soft water from hard water is as follows: soft water 0-57ppm, slightly hard water 57-100ppm, hard water 100-280ppm, extremely hard water>280ppm. Calcium and magnesium salts in hard water are unfavorable to printing and dyeing. For example, they react with soap to form insoluble calcium and magnesium soap, precipitate on fabric, and form insoluble scale in alkaline solution, which is attached to pretreatment equipment (such as groove inner wall, valve and guide roller), hindering normal production. When the amount of iron and mang...

Recently, we found that everyone has studied and discussed a lot on the production process of sodium hexametaphosphate, such as thermal or wet production, and what are the advantages and disadvantages of each. Today, the   manufacturer of sodium hexametaphosphate in China  reveals the various production methods of it. 1. Sodium dihydrogen phosphate method The soda ash solution is neutralized with phosphoric acid at 80-100°C. for 2 hours, and the resulting sodium dihydrogen phosphate solution is evaporated and concentrated, cooled and crystallized to obtain sodium dihydrogen phosphate dihydrate. Heat to 110-230°C to remove 2 crystal water, continue heating to remove structural water, and further heat to 620°C to dehydrate, the resulting sodium metaphosphate melt will be polymerized into sodium hexametaphosphate. Then it is discharged and quenched from 650°C to 60-80°C to form tablets, and then crushed to obtain a finished product of sodium hexametaphosphate. 2. Phosphorus pento...