Machine-manufactured natural sand grading adjustment system and manufacturing method of natural sand

Abstract

The invention relates to a machine-manufactured natural sand grading adjustment system and a manufacturing method of natural sand. The discharging end of a feeding conveying belt is opposite to a feeding port of a steel-sand mixing hopper; the steel-sand mixing hopper is opposite to a discharging port of a tower-type steel-ball bucket elevator by a steel-ball feeding chute; a discharging port of the steel-sand mixing bucket is communicated with a feeding port of a machine-manufactured sand grading adjustment machine; a dust collecting cover of the machine-manufactured sand grading adjustment machine is communicated with a dust remover by a conveying pipe; a discharging port of the machine-manufactured sand grading adjustment machine is opposite to the feeding end of a discharging conveying belt; a first-stage electromagnetic steel-sand separator is arranged above the discharging end of the discharging conveying belt, and a discharging port of the first-stage electromagnetic steel-sand separator is opposite to the surface of a steel-ball particle-diameter control chute by a steel-ball discharging chute; the surface of a steel-ball particle-diameter control chute is provided with a steel-ball particle-size control section; the discharging end of the steel-ball particle-size control section is opposite to a feeding port of a thick-steel-particle ground groove; the discharging end of the discharging conveying belt is opposite to a finished-product conveying belt; a second-stage electromagnetic steel-sand separator is arranged above the discharging end of the finished-product conveying belt.

Description

technical field [0001] The invention relates to a mechanism-made natural sand gradation adjustment system and a production method of natural sand, which can not only make machine-made sand into natural sand without overgrinding phenomenon, but also can be applied to dry-process sand making, belonging to machine-made sand manufacturing field. Background technique [0002] Existing sand making machines include impact crushers, impact crushers, double-roll mills, rod mills, hammer mills, ultra-fine crushing cone machines and so on. Except for the rod mill that can produce machine-made sand with a relatively round and beautiful particle size and a relatively small fineness modulus, the above machines can only produce machine-made sand with a fineness modulus of about 3.6, and in the finished product The smaller the fineness modulus of machine-made sand, the higher the needle-like shape, which leads to a great decline in the overall product quality of machine-made sand; while th...

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Problems solved by technology

Except for the rod mill that can produce machine-made sand with a relatively round and beautiful particle size and a relatively small fineness modulus, the above machines can only produce machine-made sand with a fineness modulus of about 3.6, and in the finished product The smaller the fineness modulus of machine-made sand, the higher the needle-like shape, which leads to a great decline in the overall product quality of machine-made sand; while the rod mill is added with wear-resistant rods, which are sticky during the rolling process of the cylinder. The rods also roll repeatedly in one direction (the rods can only do synchron

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