As a perfect raw material for sand making, pebble needs some steps before it becomes sand, such as crushing step and grinding step and so on. For that steps, sand making machine is needed, such as lsx sand washing machine,vibrating screen,lm series vertical grinding mills and some other ancillary equipment produced by SBM.
VSI series efficient shaft impact crusher, sand making machine, commonly known as plastic machine, is the introduction of our German experts the latest research achievements, and combining with the Chinese mining conditions improved design, is currently the most advanced level of the fourth generation high performance sand making equipment in the world.
Pebbles are generally considered to be larger than granules (2 to 4 millimetres diameter) and smaller than cobbles (64 to 256 millimetres diameter). A rock made predominantly of pebbles is termed a conglomerate. Pebble tools are among the earliest known man-made artifacts, dating from the Palaeolithic period of human history.A pebble is a clast of rock with a particle size of 2 to 64 millimetres based on the Krumbein phi scale of sedimentology.
Pebble is generally from sand mountains, which are formed by the ancient riverbed uplift after the crust movement million years ago, experiencing the flash floods hit, handling continuous extrusion, friction. Tens of thousands of years of vicissitudes in the evolution process, they have a wave hit by the water movement, gravel collision friction lost irregular edges and smooth surface. The average content of SiO2 is 85% and the highest compressive strength up to 300MPa, comprehensive hardness is above 7 degrees Morse. Compressive strength, wear resistance, good corrosion resistance make the pebble be the ideal raw material for making sand.
Beach pebbles and river pebbles are used for a variety of purposes, both outdoors and indoors. They can be sorted by color and size, and they can also be polished to improve the texture and color. Outdoors, beach pebbles are often used for landscaping, construction and as decorative elements. Beach pebbles are often used to cover walkways and driveways, around pools, in and around plant containers, on patios and decks. Beach and river pebbles are also used to create water-smart gardens in areas where water is scarce. Small pebbles are also used to create living spaces and gardens on the rooftops of buildings. Indoors, pebbles can be used as bookends and paper weights. Large pebbles are also used to create "pet rocks" for children and rocks painted with inspirational Bible verses and literary quotes.
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