Wet grinding method or rubber solution

Wet grinding method is a solution or pulverized powder production method or solution in a solvent such as medium [7]. Whereby the production of powder at room temperature by the surface state of the same, but the smaller particle size, generally 200 mesh or more, which is fitted to the new rubber compound powder crushing method is superior to room temperature and cryogenic grinding method powder.
Wet or solution pulverization method first developed by the British Association of Plastic Rubber, United States using this technology into industrial production lines. Crushing equipment is mainly used in the Act disc type colloid mill. Its crushing process is divided into three steps. The first step is crushing waste rubber, performed at room temperature using a pulverization method; Step 2 is chemical powder or water pretreatment, pretreatment of three ways: the use of fatty acids (such as oleic acid) and base ( such as sodium hydroxide) pretreatment; using a liquid medium (such as tetrahydrofuran, ethyl acetate and chloroform, etc.) pretreatment; the use of excess water pretreatment powder; step 3 is pretreated powder in disc type colloid mill for grinding crushed by the addition of alkali and, in addition to the solvent dehydration or drying process to obtain ultra-fine powder. Wherein the amount of water is more appropriate pretreatment production powder industrial production, but high production costs, used only in high-end products and some of the special requirements of material.
Japan has developed a high-pressure water impact wet grinding method to produce powder. Its principle is to use a grinding 1 ~ 2mm inner diameter of the nozzle pressure of 245MPa or more high-pressure water to the impact of discarded tires, and thus achieve the purpose of crushing to produce powder. This approach eliminates the need for a variety of devices normally required mechanical grinding process, simplifies the production process, reducing energy consumption in the process.
Russia has developed a water wet ground rubber powder production of new technology. The principle is the use of hydraulic visible infrared laser pulse technology, the rubber brittle at room temperature and pulverized. This method of producing powder having a short production time, low energy consumption, process safety, the working fluid medium can be infinitely recycled advantages.