Tang Mo-tang, etc. On the basis of years of research proposes a new hydrometallurgical method for treating bismuth concentrate - Shen bismuth chloride hydrolysis new law. At a temperature of 36 to 378 K, two-stage circulation leaching is used to greatly improve the leaching recovery rate of ruthenium. Characteristics of the process is the use of an acidic aqueous solution containing metal chloride (A # CA), which combines the advantages of ferric trichloride and chlorine chlorinating agent, to solve the problems in the regeneration and recycling of iron accumulation leachant solution, The concentration of ruthenium in the solution is greatly increased, and the productivity of the subsequent process is correspondingly expanded. The principle process flow is shown in Figure 1.
Figure 1 Process flow chart of the principle of new chlorination hydrolysis
Since it is leached at a high temperature, the oxidizing leaching rate of impurities such as As and S is high, and the side reaction causes an increase in oxygen consumption.
Investment casting is a kind of casting process. Some people call it "lost wax casting" or "precision casting". It can also be said to be a special casting improved from ordinary casting. Its precision and surface finish are higher than Ordinary casting is much higher. In some places where the precision requirements are not very high, investment castings can be used and assembled directly. Even in some positions that require precise assembly, we can meet the required requirements through local secondary CNC machining of the product, which can reduce the product's cost. Below are some of the investment castings we have done.
SCZY committed to the production of stainless steel, carbon steel, alloy steel and copper and other Metal Casting parts, and also provides professional follow-up secondary CNC machining (for places with high precision requirements and direct casting cannot meet the requirements) and various surface treatments etc. Our investment casting parts accuracy achieve CT4-6, surface finish Ra.1.6~3.2μm and the wall thickness can be reach 0.5mm. Our high-quality engineering team and quality inspection team ensure product excellent quality and in time delivery. We would be happy to provide a free quote for your upcoming project.
Investment Castings, Lost Wax Casting, Precision Casting, Investment Casting Services, Precision Casting Parts
Shenzhen SCZY Technology Co.,Ltd , https://www.szcasting.com