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Engineering sand making method

An engineering and sandstone technology, applied in the field of engineering sand making, can solve the problems of difficult-sand mica content control, insufficient reliability, complicated process, etc., and achieve the goal of improving the efficiency and accuracy of winnowing, improving accuracy, and improving accuracy Effect

Active Publication Date: 2020-01-10
STATE GRID CORP OF CHINA +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, the current engineering sand making methods are often complicated in process, high in cost, low in efficiency, and not reliable enough, and it is difficult to precisely control the quality of sand and the content of mica in it.

Method used

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  • Engineering sand making method

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Effect test

Embodiment 1

[0032] A kind of method for engineering sand making of the present invention, technological process schematic diagram is as figure 1 shown, including the following steps:

[0033] (1) Crushing: Put the mother ore from which the soil has been removed into a pulverizer for crushing to form coarse sand and gravel; in this step, use the jaw crusher to crush the parent ore to form coarse sand and gravel. The width of the feed port of the machine is 600×400mm, the motor output power of the jaw crusher is 30kW, and the size of the jaw crusher is 1700×1800×1600mm.

[0034] (2) Ball milling: Put the crushed coarse sand and gravel into the ball mill for ball milling to form fine sand and gravel; the cylinder speed of the ball mill is 36r / min, the ball loading capacity of the ball mill is 1.7t, and the motor output of the ball mill The power is 22kW.

[0035] (3) Screening: use screens to screen fine sand and gravel to form engineering sand; in this step, use a vibrating screening mach...

Embodiment 2

[0042] A kind of method for engineering sand making of the present invention, technological process schematic diagram is as figure 1 shown, including the following steps:

[0043](1) Crushing: Put the mother ore from which the soil has been removed into a pulverizer for crushing to form coarse sand and gravel; in this step, use the jaw crusher to crush the parent ore to form coarse sand and gravel. The width of the feed port of the machine is 600×400mm, the motor output power of the jaw crusher is 30kw, and the size of the jaw crusher is 1700×1800×1600mm.

[0044] (2) Ball milling: put the pulverized coarse sand and gravel into a ball mill for ball milling to form fine sand and gravel; in this step, use a ball mill to perform ball milling on the coarse sand and gravel to form fine sand and gravel The rotation speed of the cylinder is 36r / min, the ball loading capacity of the ball mill is 1.7t, and the motor output power of the ball mill is 22kW.

[0045] (3) Screening: use s...

Embodiment 3

[0053] A kind of method for engineering sand making of the present invention, technological process schematic diagram is as figure 1 shown, including the following steps:

[0054] (1) Crushing: Put the mother ore from which the soil has been removed into a pulverizer for crushing to form coarse sand and gravel; in this step, use the jaw crusher to crush the parent ore to form coarse sand and gravel. The width of the feed port of the machine is 600*400mm, the motor output power of the jaw crusher is 30kW, and the size of the jaw crusher is 1700*1800*1600mm.

[0055] (2) Ball milling: put the pulverized coarse sand and gravel into a ball mill for ball milling to form fine sand and gravel; in this step, use a ball mill to perform ball milling on the coarse sand and gravel to form fine sand and gravel The rotation speed of the cylinder is 36r / min, the ball loading capacity of the ball mill is 1.7t, and the motor output power of the ball mill is 22kW.

[0056] (3) Screening: use ...

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Abstract

The invention discloses an engineering sand making method. The method comprises the following steps: S1, crushing: crushing mother ores to obtain coarse sandstones; S2, ball-milling: ball-milling thecoarse sandstones to obtain fine sandstones; S3, screening: screening the fine sandstones to obtain sandstones with needed specifications; S4, grading: grading the sandstones to obtain sands with different grades; S5, detecting the mica content: detecting the mica content of the sands with each grade; S6, performing air separation: removing mica from the sands with different grades by air separation, wherein the frequency of air separation is determined according to the measured mica content in the sand sample with each grade; and S7, secondarily detecting the mica content: detecting the micacontent of the sands obtained by the air separation again. The method has the advantages of low cost, easiness in operation, high efficiency, good reliability, and realization of accurate control of the mica content and effective improvement of the sand quality.

Description

technical field [0001] The invention belongs to the technical field of engineering sand making, and in particular relates to a method for engineering sand making. Background technique [0002] Mica is a rock-forming mineral that presents a hexagonal flaky crystal shape. It is one of the main rock-forming minerals. The mica crystal has a layered structure inside, so it is a flaky crystal, mainly hexagonal flaky crystals. Its characteristics are insulation and High temperature resistance, the most widely used in industry is sericite, which is widely used in coatings, paints and electrical insulation industries. When the mica content in engineering sand exceeds 2%, the work degree loss of concrete made by engineering sand can reach When the mica content in the aggregate reaches 10%, the slump of concrete reaches 100%. Therefore, it is particularly important to control the mica content in engineering sand making. [0003] However, the current methods of engineering sand product...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B20/02C04B14/06
CPCC04B20/026C04B14/06C04B20/0076
Inventor 岳金文张祥富钟聚光耿必君陈颖之袁涛丁任权
Owner STATE GRID CORP OF CHINA
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