Eastman Rock Crusher

The Crushing & Recycling of Rock, Gangue and Construction Waste

The main raw materials of mobile crushing screens are rocks, ores, and solid construction waste resources. Mastering the characteristics of crushed materials allows us to be more confident in selecting equipment and maximize the efficiency of crushing and screening.

1.Rocks

Rock for sand making

Sedimentary rockMetamorphic rockMagmatic rock
dolomite, limestonemarble, phyllitegranite, rhyolite
malmstone, calcareous rockslate, quartziteolivinite, diabase
shaleschist, gneissbasalt, gabbro
conglomerate, etcandesite, diorite, etc

The compressive strength of common rocks

Rock nameCompressive strength
(Mpa)
Rock nameCompressive strength
(Mpa)
Rock nameCompressive strength
(Mpa)
gabbro180-300diabase200-350shale10-100
granite100-250basalt150-300malmstone20-200
rhyolite180-300quartzite150-350conglomerate10-150
diorite100-250marble100-250slate60-200
andesite100-250gneiss50-200phyllite, schist10-100
dolomite80-250calcareous rock20-200

Because of its good hardness and stable chemical properties, rock is often used as high-quality building materials and concrete raw materials, and is widely used in construction, roads, highways, railways, engineering and other fields.

How to select the right crusher according to compressive strength?
how to select crusher

2. Ore

ore

Metal ore
Ferrous metal
Iron, manganese, chromium, vanadium, titanium, etc
Nonferrous metals
Copper, tin, zinc, nickel, cobalt, tungsten, molybdenum, mercury, etc. Precious metals include platinum, rhodium, gold, silver, etc.
Light metal
Aluminum, magnesium, etc
Rare metals
Lithium, beryllium, rare earth, etc
Non-metallic ore
Diamond, graphite, crystal, corundum, asbestos, mica, gypsum, fluorite, gemstone, jade, agate, limestone, dolomite, quartzite, ceramic soil, refractory clay, marble, granite, salt ore, phosphate ore, etc.

Ore is a natural aggregate of minerals in the earth’s crust. Under the conditions of modern technology and economy, it can extract metals or other mineral products necessary for the national economy on an industrial scale. It is called ore. Therefore, the pressure value of the ore should refer to the rock or the actual measurement.

Ore can be used in engineering fields such as the metallurgical industry, chemical industry, construction industry, cement industry and sand and stone industry after being graded and processed by crushing and grinding.

3. Gangue

rock-gangue
Construction waste refers to the muck, spoil, waste material, residual mud and other wastes generated during the construction, laying or demolition and repair of various buildings, structures, pipe networks, etc.
Recycling: After sorting, concentrating, and returning to the furnace, metals such as scrap steel bars, scrap wires, scrap wires, etc. can be processed into various specifications of steel. Waste bamboo wood can be used to make artificial wood. After crushing brick, stone, concrete and other waste materials, it can produce machine-made sand, which can be used for masonry mortar, plastering mortar, etc., and can also be used to make pavement bricks, lattice bricks and other building materials.

Tunnel slag refers to stone waste slag excavated during tunneling. Utilize stone waste slag to generate machine-made sand, used for road construction, gravel aggregate, concrete mixing station, earth and stone engineering, building construction, environmental protection brick, etc., turning waste into treasure.

Tailings are potential treasures to be excavated. Experts believe that the current task of China’s mining circular economy is to develop and utilize a large number of tailings that have been put on hold for a long time.

Recycling: Re-purification and recycling, tailings of other components can be used as construction raw materials after processing, and can be made into materials such as cement, sand brick, tile, refractory glass and foam through reprocessing; tailings can be used as raw materials for road construction Or anti-skid materials on the pavement, etc .; it can also be covered with soil on the tailings accumulation site to plant crops or plant afforestation.

Coal gangue is solid waste discharged during coal mining and coal washing. It is a kind of dark gray rock with low carbon content and harder than coal that is associated with the coal seam during coal formation. Including the gangue excavated during the roadway excavation process, the gangue extracted from the roof, floor and interlayer during the excavation process and the gangue selected during the coal washing process.

Recycling purposes: coal, chemical raw materials (pyrite), power generation, manufacturing of building materials, production of low calorific value gas, manufacturing of ceramics, making of soil improvers, or for paving, underground filling, and ground filling. After spontaneous combustion, gangue hills can also be planted with grass to afforest the environment.
rock recycling

4. Mobile crusher

crushing and screening
mobile crusher