40#

Business scope: Production and sales of diamond sand, welding flux, and refractory materials

Category:

Brown corundum F sand

Keywords: brown corundum production

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Detailed introduction

Natural sand It is formed by natural weathering, water erosion, accumulation of rock particles with a particle size less than 4.75mm, according to the living environment is divided into river sand, sea sand, mountain sand. The surface of river sand particles is smooth, relatively clean, good texture and wide production source; The surface of mountain sand particles is rough, angular, and contains much mud and organic impurities. Although sea sand has the characteristics of river sand, because it is in the sea, it is often mixed with harmful impurities such as shells and salt. River sand is often used in general engineering. In areas lacking river sand, mountain sand or sea sand can be used, but technical inspection must be done according to regulations when used.

Artificial sand is a fine aggregate obtained by manual processing and meeting the requirements of the specifications, usually referring to the rock processing process by vacuum suction and other methods to remove most of the soil and fine powder, or the stone debris washed clean fine aggregate. In a broad sense, machine-made sand, slag sand and calcined sand are all artificial sand. Among them, the artificial sand that is repeatedly broken and processed by the gravel and gravel through the sand making machine to the particle size of less than 2.36mm is called mechanical sand, also known as broken sand. The lower part of the screen through the smallest screen hole (usually 2.36mm or 4.75mm) when the gravel is processed in the quarry is called the stone chip, also known as the screen chip. The surface of the sand particles is more spindle Angle, cleaner, but the cost is high, if there is no special circumstances, most of this sand is not used.

Calcination: The operation of calcination in which a solid substance is heated to a high temperature in order to achieve the purpose of dehydration, removal of volatile impurities in it, burning of organic matter, etc. Calcination can be carried out directly on the flame of the blowtorch, or in a crucible furnace with electric heating or a 烰 furnace. Calcination is usually carried out in two steps: first, it is carefully heated over the flame of a gas blowtorch or on an electric furnace, and then the main calcination action is carried out at high temperatures in a 烰 furnace or a crucible furnace.

36#

46#