platinum scrap price

admin1 Precious metals 2021-04-06 09:03 0

 
   How much is the platinum scrap recycling price? Don't know where is the most suitable? Then Dingfeng Company will answer you one by one the price of platinum pellet recycling from a professional point of view. The choice of buffering agent is not predetermined for a particular composition, because the method described here replaces any of the different material choices to form platinum scrap. The only requirement for the buffer is that it is incorporated into the aqueous solution of platinum waste, and it can maintain a stable pH when a chemical reduction reaction occurs between the selected specific organic acid and the platinum particle aqueous solution that replaces the platinum particles. The change in any direction of the pH scale is not greater than about 03 pH units. In some embodiments, the pH changes in any direction on the pH scale by no more than about iph units. Sodium, sodium dihydrogen phosphate, citric acid, etc. When preparing the reaction solution, the ratio or relative amount of its components is not particularly limited. However, in order to ensure that all or substantially all of the replaced platinum waste material in the reaction solution is reduced to platinum waste, the molar ratio of organic acid to the cationic platinum particulate material in the reaction solution should be greater than or equal to about 1. That is, the concentration of the organic acid should be at least molar equivalent to the concentration of the cationic platinum particulate material in the reaction solution, or the stoichiometric ratio of the organic acid concentration should be excessive relative to the concentration of the cationic platinum particulate material in the reaction solution.


 
   As for the buffer, the buffer concentration in the reaction solution should maintain a stable pH. The determination of the appropriate amount of buffering agent is caused by a person of ordinary skill in the art. In some embodiments of the methods described herein, alternative bases or alkaline materials may be used to adjust the initial pH of the reaction solution to a desired range. The buffer maintains an appropriate and stable pH level. When an alternative base is used, the organic acid and the buffer can be directly set in the reaction solution after the platinum particle-containing aqueous solution is set. The particle-based alkali, the solution of the included alkali is directly set to the reaction solution, and or the like. Any appropriate suitable base can be used to adjust the pH of the reaction solution. If necessary, a person of ordinary skill in the art can easily determine the appropriate amount of replacement base to be used. Once the reaction solution is formed, a reaction product including metallic platinum particles can be produced. In the production step of the reaction product, the amount by which the concentration of the cationic platinum particles in the reaction solution is reduced is commensurate with the amount of metallic silver produced. After at least the organic acid is added to the silver-containing aqueous solution, the production of some reaction products occurs almost immediately. However, in most embodiments, there is a certain delay before some oxide or visible amount of reaction product is produced. This step is determined by the precipitation of metallic platinum particles from solution. Although the production step of the reaction product can be carried out under different atmospheric conditions such as argon, nitrogen, etc., in most embodiments, it is usually carried out in air. In some embodiments, the step of generating the reaction product may include heating and or mixing the reaction solution to promote or accelerate the formation of the reaction product.


 
   The preferred heating and mixing step. When the heating step is performed, the reaction solution is heated to an elevated temperature, and the decomposition is maintained to increase the reaction time. The reduction reaction promoted by the heating step is an exothermic reaction. Therefore, in order to avoid reducing the efficiency of the reduction reaction, generally, when heating is used, the temperature of the reaction solution is increased to less than or equal to about 9°C. When a mixing step is used, this usually involves mixing the reaction solutions and increasing the time for the reaction to occur. The physical mixing of the reaction dispersion can be performed by a variety of techniques. This includes the use of stirring, mechanical shearing, shaking, ultrasound, etc. In the mixing step, the actual mixing can be performed in a continuous manner or in a continuous discontinuous manner. The duration of the product generation step is usually at least to allow the reduction reaction to proceed naturally, or whether to implement repeated heating and or mixing steps. The upper limit of this duration is to replace the required amount of platinum particulate material chemically. Generally, the duration of the product generation step is about 5 minutes and 24 hours. However, in most embodiments, the duration of the heating step is about 10 minutes and about 3 hours. Those of ordinary skill in the art will recognize that the use of alternative heating and or mixing steps can result in shorter product generation step durations. The precise time of the step. After the specific precipitation in the product production step, the reaction solution can be characterized to determine whether it includes energy emissions, for example, discharge into sewage pipes or other such alternative collection reservoirs with sufficiently low concentrations of cationic silver materials.



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