Techniques and Characteristics of Artificial Sand Production

In China, artificial sand technologies have experienced 40 years of development and has achieved the advanced world level, from the step-by-step grope to continuous innovation and application. Compared with the natural sand, artificial sand has a variety of advantages in the aspects of system construction cycle, product quality, economical efficiency and impact on the environment. In the near future, Sand Making Machine will be bound to replace natural sand and truly become the granary of our engineering construction. Artificial Sand Production Process: 1. The prospect of artificial sand replacing natural sand. Currently the construction sand in domestic mainly comes from exploiting the natural river sand. But the natural sand is a kind of regional and non-renewable resource within short time. In recent years, the large-scale infrastructure construction driven by the high-speed economic development in our country has consumed a large amount of natural sand resources. Natural sand resources decrease rapidly in many areas of China. In many peri-urban areas and regions of some large and medium-sized cities such as Beijing and Tianjin, the natural sand resources has been nearly dried up so far. The exploitation and excavation of natural sand has a tremendous destruction to the riverway as well as a certain adverse effect on the natural ecology. Nowadays, the progress in the fast-changing processing equipment for VSI Sand Making Machine and the development of theories such as self-impact crushing provide a solid technical foundation for artificial sand taking the place of natural sand. In the hydropower industry, artificial sand has nearly replaced natural sand in all uses, becoming the main ingredient of concrete. Various departments have started to study and promote the applications of artificial sand in more fields. 2. The production technique and equipment of artificial sand. Artificial sand production process: Feeding system (feeder) -- coarse crushing system (jaw crusher)-- fine crushing system (cone crusher)-- sand making system (sand maker/ rod mill)-- aggregate washing system (sand washer)-- sand screening system (vibrating screen)-- finished product stockyard. 3. The Characteristics of artificial sand production technique. To coordinate the development of artificial sand, we have studied the all-dry, semi-dry and wet-process sand production techniques. In the long-term production practice and constant research, we have worked out a major mode of sand production process according to the aggregate sources and quality requirements, that is, three-stage crushing(coarse, secondary or fine crushing) pluses the vertical shaft crusher. 4. Its main characteristics are as following: 1. Substitute crushing for grinding and combine crushing with grinding, more crushing than grinding; 2. Add coarse sand shaping and Sand making machine in the dry-process sand production to control the fineness of sand and rock powder content, etc. 3. Adopt computer-centralized control and video surveillance, conductive to less people on duty and system automation; 4. Pay attention to environmental protection and create a "green granary", and choose different measures to control dust in different production stages, such as water spray, air draft and local sealing and etc.; 5. Recycle the production wastewater through the precipitating and circulating system. http://crushersale.cf/crush/sitemap30.xml

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