Basalt scale

2023-11-20 10:08:46   165

Introduction to basaltBasalt is a volcanic extrusive rock and is one of the most widely existing and distributed minerals on the earth and moon.Basalt mineral is an inorganic silicate. The main components of basalt are silica, aluminum oxide, iron oxide, calcium oxide, and magnesium oxide. Sil

Introduction to basalt

Basalt is a volcanic extrusive rock and is one of the most widely existing and distributed minerals on the earth and moon. Basalt mineral is an inorganic silicate. The main components of basalt are silica, aluminum oxide, iron oxide, calcium oxide, and magnesium oxide. Silicon dioxide has the largest content, accounting for about 45-50%. Basalt has been tempered by volcanoes and calcined in kilns, transforming from hard rock into soft basalt fibers and light basalt scales. Basalt material has the characteristics of high temperature resistance (880℃), low temperature resistance (-200℃), low thermal conductivity (heat insulation), sound insulation, flame retardant, insulation, low hygroscopicity, corrosion resistance, radiation resistance, high breaking strength, elongation Low, high elastic modulus, light weight and other outstanding properties.

Introduction to basalt scales

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Basalt scales are translucent, gray-green flakes, with sizes ranging from 25um to 3mm and a thickness of about 3um. Basalt scales are made from gray-black volcanic magma through special processing such as high-temperature melting, clarification, homogenization, shaping and screening. A coating with an average thickness of 500um in a single layer has 150-200 layers of scales, forming a layered zigzag structure. Compared with the general corrosion-resistant layer, the penetration rate is reduced to 6-10% of the original. Therefore, basalt scales can improve the anti-corrosion properties and wear resistance of polymer materials; improve their mechanical properties, thermal deformation temperature, and dielectric properties; reduce thermal expansion and contraction, and have better dimensional stability; the operating temperature range can reach -200 to 1000℃.

Contrast with glass flakes

Compared with ordinary glass flakes, basalt flakes contain higher amounts of iron oxide, titanium dioxide, aluminum oxide and calcium oxide and less alkaline oxides. Therefore, basalt flakes have better acid, alkali and weather resistance than glass flakes. , dielectric properties and heat resistance, especially higher corrosion resistance. Compared with related traditional coatings, the wear resistance of basalt flake coatings is 1.5-2 times higher, and it has higher adhesion strength to metal and concrete. The working temperature difference reaches 60°C, increasing the cold resistance of concrete by 5-6 times. Therefore, basalt flakes can completely replace glass flakes in coatings and other fields and are used in anti-corrosion fields such as petroleum, chemical industry, ships, bridges, buildings, and dams.

Application fields of basalt scales

Automobile manufacturing industry: used as heat-insulating and sound-absorbing materials for automobile mufflers, heat insulation panels, heat insulation pads, and shielding guards; used for manufacturing brake pads and brake discs; used for anti-corrosion, anti-collision, and wear-resistant coatings on the bottom of automobiles layer.

Shipbuilding industry: Used as composite materials to prevent seawater corrosion, heat and sound insulation materials for shipboard devices and equipment, hull insulation panels and ship wall insulation materials, structural materials; used as anti-corrosion paint layers for ship hulls and ship top structures.

Petrochemical industry: used as anti-corrosion and wear-resistant protective layer for containers, conduits, and petroleum pipelines; used as non-flammable surface coatings and composite materials.

Metallurgical industry: used as thermal insulation material for thermal equipment, furnaces, heat recovery devices, pipes and pipelines.