Cobblestone is a common round egg-like stone, which is generally distributed on the river bed, river bank, and mountain stream. The formation of pebbles is mainly formed by the abrasion and transportation of water after the mountain collapses. The composition of cobblestone is mainly determined by the parent rock. The parent rock includes our common igneous rocks such as basalt, glaucon, granite, etc., sedimentary rocks such as limestone, tuff, etc., and metamorphic gneiss, marble, etc., which are not solid during the formation process. River sand and soil will gradually form, and the slightly solid part will form the final pebble.
Cobblestones give everyone the impression that the hardness is very high, which is indeed the case in general, but it is not entirely the case. The hardness of cobblestone is mainly related to the rock quality, weathering degree, and formation time of the parent rock. For example, the parent rock is basalt. Although it is partially weathered, it is transported by water flow after the collapse, and the formation time is longer. The unconsolidated part has become sand, and the remaining part is generally hard. For another example, the parent rock is limestone, and the formation time of the pebble is not long, compared with the high hardness stone content is very low. However, it is recommended to make a measurement to better grasp the hardness of the pebble. In view of the general situation, it is recommended to use hard rock crushing equipment for crushing sand from cobblestone.
China has a developed water system, a wide range of geological rocks, a long coastline, and a huge river pebble content. Especially in the southern Yangtze River basin and coastal areas, the rational use of these resources is bound to bring huge economic benefits. Cobblestone is a kind of pure natural sand and gravel raw material, the artificial sand making effect is ideal, the cost is low, and the economic benefit is good.
- Recommended model: PF1515 counterattack equipment Features: Simple structure, durable, suitable for most production lines
- Recommended model: JYS5145 Sand making machine Features: Strong crushing capacity, good grain shape, mass production.
- Recommended model: HST250 single-cylinder cone crusher Features: Integrated hydraulic overload protection, more convenient maintenance, large feed, strong crushing.
- Recommended model: HPT300 multi-cylinder cone crusher Features: Strong crushing ability, cone crusher with grain shape optimization function.
For river pebbles, the shape is regular, and the good-looking ones are basically used for landscape stones and garden stones; the unsightly ones are mostly used for crushing sand, and sometimes there are certain soils and natural sands. River pebble sand making process uses more equipment. According to the size of the river pebble, the coarse crushing equipment should be adapted to the material. For larger sizes of pebbles (diameter over 250MM), jaw crushers are generally used for preliminary crushing. Thicker single-cylinder cones can be used for diameters below 250mm. If fine-cylinder single-cylinder cone crushers or multi-cylinder cones, springs Conical, feed should be guaranteed below 180mm. The material processed by cone crushing must be sieved through a sieve group. After screening, the material that exceeds 40mm must be returned as returning material. The material that is below the cone crushing and crushing is processed into the sand making machine, and the sand that is less than 4.75mm is washed. Machine washing, dewatering screen, dewatering and conveying to the finished sand area for stacking or entering the finished product warehouse.
圆锥破碎机 （包括单杠圆锥、多缸圆锥破、弹簧圆锥等）；冲击制砂机( 制砂机设备 )；振动筛、洗砂机、脱水筛、皮带输送机、 中转料仓、稳料仓、悬挂式给料机等辅助设备。 The complete set of equipment basically includes: coarse crushing combination, feeder + jaw crusher (optional, not required for every production line); ② cone crusher (including horizontal bar cone, multi-cylinder cone crusher , spring cone, etc.); impact Sand making machine ( sand making machine equipment ); shaker, sand washing machine, dewatering screen, belt conveyor, transfer silo, stable silo, hanging feeder and other auxiliary equipment.
Main areas where river pebble can be used
First, as garden landscape stones, large cobblestones can be used as cultural stones, and small regular ones are mostly used as road landscape stones. It not only promotes the ancient culture of the East, but also has a natural style that embodies the classics and elegance of the West and achieves its return to nature.
2. River pebble also provides high-quality materials for water purification, power, garden and other projects, as well as raw and auxiliary materials for ceramics, precision casting, papermaking, spray grinding, chemical engineering, single crystal silicon, and national defense. A common case is a river pebble with a diameter of 8-10cm on the floor of the oil pool below the large transformer to absorb oil leakage from the transformer.
Third, river pebble sand , river pebble is a very good raw material for sand and gravel aggregate. River pebbles are born with yellow sand, and made of machined sand with river pebbles with bad shape and poor landscape value is an economically feasible method to increase value.
Processing purpose: machined sand
Target hourly output: 100 tons of machine-made sand per hour, 120 tons of fine aggregate
Recommended models: JY1380 cone crusher, 1238 sand making machine
Processing purpose: production of machined sand
Target hourly output: 100 tons
Recommended model: HST160 single-cylinder cone crusher 900B sand making machine