Method and device for producing crushed sand by heat treatment of desert sand as starting material

A material and desert technology, applied in the production of artificial crushed sand or crushed sand, to achieve the effect of reducing the risk of natural disasters, reducing the increase, and slowing down the expansion of the desert

Active Publication Date: 2020-06-12
BLACK RAMEL LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0014] None of the above sintering methods provide a means of converting desert sand from round or fine sand (fS / FSa) to polygonal medium sand (mS / MSa)

Method used

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  • Method and device for producing crushed sand by heat treatment of desert sand as starting material
  • Method and device for producing crushed sand by heat treatment of desert sand as starting material
  • Method and device for producing crushed sand by heat treatment of desert sand as starting material

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Embodiment Construction

[0041] figure 1 A possible device for carrying out a preferred embodiment of the method according to the invention is shown. In this case, desert sand as a starting material 1 is placed through a storage container 6 (eg, funnel-shaped) on a coarse screen 7 to remove the coarsest impurities from the starting material 1 . After the screening process, the screened starting material 1 is transferred directly to a suitable conveyor belt 8 as support surface. The conveyor belt is provided with a release sheet 9 to produce a uniform layer with a controllable layer thickness. Optionally, the flatness of the material layer can be improved by vibrating belts. The homogeneous sand layer goes further via the conveyor belt 8 to the level of heat treatment, melting the starting material 1 as it is guided past the immediate region of the focal point 10 of the device 5 for concentrating the sun's rays, such as a plano-convex converging lens. The larger the area of ​​the means 5 for concen...

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Abstract

The invention relates to a process for the production of artificially crushed sand by heat treatment using sand in the form of fine sand (fS / FSa) and / or round sand as starting material (1). The starting material (1) in variant A is heated to the melting temperature by a beam of solar rays (13), and / or the starting material in variant B is heated to the melting temperature by using a conventional melting device, which Its energy supply is achieved using converted or stored solar energy so that each of the plurality of sand grains fuses together into a three-dimensional intermediate product (2). The intermediate product (2) prepared in this way is cooled and finally comminuted in a comminution process to a particle size of less than 2 mm. A final product (3) is produced which differs from the starting material (1) in terms of shape and surface roughness. This method provides a long-term solution for meeting the demand for crushed sand and providing sand to the construction industry.

Description

technical field [0001] The present invention relates to a method and a device for producing artificially broken sand or crushed sand by heat treatment using sand in the form of fine sand (fS / FSa) and / or round sand as starting material. Background technique [0002] By definition, the name sand is used for all unconsolidated rock deposits consisting of individual mineral grains with a grain size from 0.063 mm to 2 mm. According to DIN 4022, various types of sand are distinguished according to their grain size, surface and shape. Depending on the particle size distribution, sands are classified as fine (fS / FSa), medium (mS / MSa) or coarse (gS / CSa). Further subdivisions of sand are specified by the terms "circular sand" and "angular sand". Round sand mainly includes round components. They are mainly found in desert regions and mainly in the fine sand (fS / FSa) particle size range. Angular sand is further subdivided into naturally occurring broken sand and artificially produce...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B14/06C04B18/02F24S20/30F24S23/30F24S23/79
CPCC04B14/068C04B18/023C04B20/026C04B20/04C04B40/0003Y02E10/40F24S20/30F24S23/31F24S23/79F24S23/30Y02P80/20B28C7/0007C04B18/026Y02P40/00C04B14/06B02C23/00B02C23/02
Inventor 丹尼斯·贝尼施约万·伊基奇
Owner BLACK RAMEL LTD
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