Relationship between gold leaching rate and leaching speed and leaching time
During the whole leaching process, as the leaching time increases, the leaching rate of gold increases continuously, but the leaching speed is continuously decreasing, and the leaching rate gradually approaches a certain limit value.
In terms of building materials, industrial products, daily necessities, floor leather, floor tiles, artificial leather, pipes, wires and cables, packaging films, bottles, foaming materials, sealing materials, and fibers, PVC was the world`s largest production of general-purpose plastics, and its applications are very widely. Widely used in all aspects.
PVC is a white powder with an amorphous structure. The degree of branching is relatively small. The relative density is about 1.4. The glass transition temperature is 77~90°C. It begins to decompose at about 170°C. It has poor stability to light and heat. After prolonged exposure to sunlight, it will decompose to produce hydrogen chloride, and further automatically catalyze the decomposition, causing discoloration, and the physical and mechanical properties also rapidly decline. In actual applications, stabilizers must be added to improve the stability of heat and light.
the Degree of polymerization of SG5 is 1000. usually we also call PVC Resin S1000. Its K-value is K67.
PVC RESIN SG5,Polyvinyl Chloride,Polyvinyl Chloride SG5,PVC Resin K67 Henan Shunbang Chemical Industry CO.,Ltd , https://www.sblubricant.com
The reason why the leaching speed of gold gradually decreases with time is as follows:
1. During the leaching process, the volume and number of gold particles are continuously decreasing due to the continuous dissolution of gold.
2. With the leaching of gold, the diffusion distance of the cyanide agent, dissolved oxygen and gold is increasing.
3. While the gold is dissolved, the impurity elements in the pulp are continuously increased and accumulated, and some impurities may form a harmful film on the surface of the gold particles.