Concrete Recycling Equipment
Initial usage and effects of light and other plants. Particulate standard Item Index Remark natural sand clay content (5% of which should not contain earth soil aggregates content <1% of artificial sand powder content of 10% means 22% less than 0.16mm ruggedness <10% mica content <2% apparent density> 2.50 cm3 content created light matter <1% depending on the density of less than 2.09/em3 sulfide and sulfate content by mass (folded sections mom) <1 intestinal content of organic matter, such as a light color darker than the standard standard color should be dubbed mortar, the strength comparison test in general, fine aggregate quality requirements RCC using basically the same with normal concrete, requires its own hard, clean, which should not exceed harmful impurities table range.
However, compared with normal concrete RCC sand sand have higher requirements in terms of fines content and moisture content. Vertical shaft impact crusher sand making process independent of traditional sand craft, whether it is a single rod mill mechanism sand or vertical shaft impact crusher and sand making joint rod mill, rod mill are used. Since the mechanism of sand must be wet rod mill production, water consumption, steel consumption large, difficult to control the moisture content of sand, sand and more difficult to achieve RCC quality requirements, but due to the high cost of sand, sewage treatment and other issues also brought Therefore, we must study the RCC dam feasibility separate vertical shaft crusher sand, using a dry or semi-dry process production lines to meet RCC sand quality requirements, greatly reducing the cost of sand.
After a series of experimental research, and finally in RCC dam project in Guizhou limestone source material success using this process. Vertical shaft impact crusher crushing independent theoretical vertical shaft crusher sand making process is the core of the vertical shaft impact crusher, its crushing mechanism is as follows: Griffith theory states that: internal solid material particles actually strict rules are not arranged, but there are many microcracks when the material is subject to external force, these micro-cracks gradually expanded its height near the tip to produce a stress concentration, resulting in further expansion of the crack, until the material is damaged. Impact crushed form: rock stone - high-speed movement of material impact on stationary (or low) materials; o stone blacksmith - high-speed movement of a rigid material impact on the fixed target (or high bounce materials).