Ladle Cooling Water Treatment
Ladle cooling water is a key process for castings during production in metallurgical plants, and its water quality requirements are also very high. If there are problems such as serious scale, excessive corrosion and water quality instability in ladel cooling water, it will often affect the quality of castings, which will have a great impact on the production of castings. Therefore, it is necessary to conduct scientific and reasonable control and management of the ladel cooling water treatment process.
The treatment of ladel cooling water mainly includes five links: pretreatment, scale removal, corrosion control and water quality stabilizing, biocidal and final filtration. The pretreatment process mainly choses the type of raw water and pays attention to the pH value, ionization degree and suspended solids which affect the quality of ladel cooling water. If the pH value of raw water is too low (below 6.5), chemicals can be added to adjust the pH. The alkalinity of the raw water is generally between 2-4 me / l, if it is too low, sodium carbonate can be used to adjust the pH, if it is too high, sodium bisulfite should be used to adjust the pH.
Then, we can carry out the scale removal process. The scale removal process mainly includes three methods: chemical scale removal, physical scale removal and combined scale removal. The chemical scale removal mainly adds certain chemicals for desalination, and uses the precipitation effect to remove the scale inside the ladel cooling water. The physical scale removal mainly uses the physical principles of ultrasound, through the cavitation effect generated by the ultrasound, it can clean the inner wall and sediment of the ladel cooling water. The combined working method combines the chemical scale removal and physical scale removal, and uses the synergistic effect of the two to achieve the purpose of scale removal.
In addition, we also need to choose a reasonable corrosion controlform. Corrosion is a major source of pollution in cooling water and can cause equipment to corrode and block, leading to increased energy consumption and increased system maintenance costs. In cooling water treatment, corrosion problems can be solved through chemical processes such as pH regulation and polyamine dosing.
Finally, we need to pay attention to ensuring the water quality stability of ladel cooling water. Usually, a reasonable biocidal treatment is carried out to ensure the stability of ladel cooling water. Commonly used biocides include chlorine-containing biocides, hydrogen oxide biocides and silver ion biocides. Chlorine is the main factor affecting the stability of cooling water quality, so it is necessary to carry out regular monitoring to ensure that the residual chlorine in the cooling water meets the requirements.
At the same time, in order to effectively deal with the above-mentioned problems, it is necessary to carry out regular filtration treatmentfor ladle cooling water. Filtration treatment helps to remove pollutants, pollutants and microorganisms in ladle cooling water, so as to alleviate their adverse effects on castings and improve the quality of final castings.
In short, due to the high requirements of ladel cooling water, it is necessary to take effective measures to key equipments with regular maintenance, so as to ensure the normal operation of ladel cooling water and the quality of castings.
