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Anonymous users2024-02-12At present, environmental protection inspectors and rectification, river sand mining is limited, and machine-made sand has slowly replaced natural sand into the market, among them, quartz sand is a commonly used raw material for sand making, so what is the difference between quartz sand and river sand?
Is quartz sand and river sand?
No, the two are not the same, but quartz sand can replace river sand after being processed by professional equipment (vibrating screen, feeder, crusher, sand making machine, sand washing machine) and is widely used in many fields.
The difference between quartz sand and river sand.
Quartz sand: a non-metallic mineral, but also a hard, wear-resistant, chemically stable silicate mineral, its main mineral component is SiO2, an important industrial mineral raw material, divided into ordinary quartz sand, refined quartz sand, pickled quartz sand, high-purity quartz sand, etc.
River sand: after years of scouring, formed under a series of forces such as impact, erosion and transportation of river water, the particles are round, the water absorption is good, the concrete of river sand has good fluidity, which is conducive to the pumping of concrete, but it is often mostly fine sand, and it is necessary to add medium sand and coarse sand to adjust the gradation.
Machine-made sand instead of natural sand is the trend of future development, there is a problem in crushing sand making, there are bosses who invest in sand farms, you can find free access to detailed information!
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Anonymous users2024-02-11River sand cannot be used for insulation mortar.
Insulation mortar can only be made with quartz sand. Because of the good characteristics of quartz sand, containing high-purity silica, high strength, high weathering resistance, strong hardness, long service life, mixed with rubber powder, the bonding strength is improved. The river sand is selected, the composition is too complex, contains a small amount of soil, mixed with rubber powder, but reduces the bonding strength, the river sand is weathered, easy to crush, no hardness, no strength, the life of the insulation mortar produced with river sand is very short, easy to crack, directly affect the quality of the project.
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Anonymous users2024-02-10Thermal insulation mortar. No, you can't.
River sand. Insulation mortar can only be used.
Quartz sand. Because of the quartz sand.
Characteristic. Okay, yes.
High purity silica.
Strength. Large, high weathering resistance, hardness.
strong, long service life, with.
Glue powder. After mixing, it is raised.
Bond strength. Whereas.
River sand. Carefully selected, ingredients.
Too complex, containing a small amount of soil, mixed with rubber powder, but reduce the bond strength, river sand weathering, easy to crush, no hardness, no strength, with river sand production of insulation mortar life is very short, easy to crack, direct impact.
Quality of engineering.
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Anonymous users2024-02-09The reason why quartz sand is one of the indispensable raw materials in the insulation mortar of building exterior walls is that it has been scientifically demonstrated by experts and has been tested many times. This is due to the technical composition requirements of thermal insulation mortar determines that quartz sand must be used as one of the raw materials, of course, cement and cellulose, rubber powder, etc. are also indispensable, but the largest proportion of thermal insulation and anti-cracking mortar is quartz sand and cement. 1.
Quartz sand for exterior wall insulation mortar, 40-70 mesh is used respectively, and adhesive mortar is used. 50-100 mesh, plastering mortar, now there are many thermal insulation mortar units all use 50-100 mesh to make two kinds of mortar, which can be used in general.
2.Linyi quartz sand is required to have stable quality, high silica content, standard mesh, uniform specifications, secondary dust removal, natural quartz sand, no river sand, although the cost of river sand is a little lower, but the quality is not good, the service life of the mortar is low, and the quality of the mortar has decreased too much. The quartz sand used in dry mortar has two mesh numbers of 40-70 mesh and 70-140 mesh, and it is better to have a gradation in bonding and plastering.
The chain grip of Shenqing mortar for bonding shed is 40-70 mesh: 50-100 mesh for plastering mortar: in recent years, due to the competition of external wall insulation projects, developers are also reducing costs, as a thermal insulation mortar producer also wants to reduce the cost of raw materials, so in cellulose, rubber powder, cement and quartz sand and other links to make a fuss, some use river sand to replace quartz sand, river sand because of complex composition, containing soil, strength, hardness and weathering resistance and life are far from being comparable with quartz sand.
In some cases, it is recommended that the majority of mortar producers should continue to use quartz sand. At present, in Shandong and surrounding provinces and cities, the quartz sand of Linyi Mountain original quartz sand field is used, with stable quality, low quality and good reputation. In order to make the building insulation business more filial and more assured, we also need to create together.
1. Ordinary quartz sand.
Ordinary quartz sand is generally a kind of water treatment filter material made of natural quartz ore, which is crushed, washed, dried and screened for secondary screening. This quartz sand has: >>>More
Quartz sand is a hard, wear-resistant, chemically stable silicate mineral, its main mineral component is SiO2, the color of quartz sand is milky white or colorless translucent, hardness 7, brittle and non-cleavage, shell-like fracture, grease luster, relative density is, its chemical, thermal and mechanical properties have obvious anisotropy, insoluble in acid, slightly soluble in KOH solution, melting point 1750. The color is milky white, light yellow, brown and gray, and quartz has high fire resistance. >>>More
Main Categories:
Quartz has high refractory properties, and the industry often divides quartz sand into: ordinary quartz sand, refined quartz sandHigh-purity quartz sand, fused silica sand andSilica powderWait. >>>More
Commonly used sandblasting and rust removal methods include dry sandblasting, wet sandblasting, dust-free sandblasting and high-pressure water sandblasting. Dry sandblasting is dusty, which hinders environmental protection and endangers health; Although the wet process is dust-free, moisture will cause rust on the surface again. The way to prevent it is to add 1% 15% rust inhibitor (trisodium phosphate, sodium carbonate, sodium nitrite, etc.) and emulsifier or soapy water to the water to make the surface rust not regenerate in a short period of time, and then apply a maintenance primer. >>>More
1. The hardness is different.
The hardness of ordinary sand simply cannot be compared to quartz sand. >>>More