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 synchronous rolling motion in the middle and lower part of the cylinder wall with the rotation of the cylinder wall), the machine-made sand in the cylinder is crushed between the rods, although the rod mill can The machine-made sand with relatively round and beautiful particle size and relatively small fineness modulus is produced, but firstly, its own production capacity is low; secondly, a large amount of over-grinding occurs, resulting in high waste powder in the finished product and polluting environment, and cause waste of raw materials; the use of three rod mills in dry sand making is relatively immature, and the effect is not good

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