KR20140106931A

KR20140106931A - Method For Recycling Discharge Of Water-Jet Procedure

Info

Publication number: KR20140106931A
Application number: KR1020130021245A
Authority: KR
Inventors: 조형래; 김성준
Original assignee: 조형래; 김성준
Priority date: 2013-02-27
Filing date: 2013-02-27
Publication date: 2014-09-04

Abstract

The present invention relates to a method for producing a structural material capable of industrially utilizing all kinds of wastes generated from abrasive materials used to cut materials. The method for recycling wastes caused by a water-jet procedure comprises a collection step of collecting all kinds of foreign materials caused by a cutting work; a moisture removal step of removing some of moisture from the collected materials to be recycled; a material mixing step of mixing an adhesive curing agent with the materials from which some of the moisture is removed; a forming step of compressing and forming the mixed materials with a forming mold to have a three-dimensional figure; and a drying step of drying the formed product to remove the moisture.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of recycling a water-

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of recycling an industrial waste, and more particularly, to a method of producing a structural material that can be utilized industrially by using various wastes generated in an abrasive used for cutting various materials.

(Water jet) method is adopted as a method for cutting environmentally friendly various industrial materials such as building materials and various metals without damaging them. Hydraulic cutting is a method of cutting a material by mixing water and an abrasive and spraying it at an ultra-high pressure, and is effective and useful enough that there is no material that can not be cut.

On the other hand, even in the case of hydraulic cutting, the abrasive material is discharged into the waste together with water. Therefore, it is common to collect and dispose of these emissions at the present time.

Emissions include many types of metals, non-ferrous metals and sludges, including abrasives, and are incapable of being incinerated because they are wet with water.

In order to solve the problem caused by the loss of such abrasives, Korean Patent Application Nos. 10-2001-0077009 and 20-2009-0016847 propose a method of separating and collecting abrasives from foreign substances and recycling them. However, there is a problem that it is costly to construct a system for separating abrasives from various foreign substances, and it is difficult to separate them completely and the quality of the recycled products may be deteriorated.

It is an object of the present invention to solve the above problems and to provide a method for effectively recycling water, granular cutting waste, sludge, abrasive, and the like generated in the hydraulic cutting process. More specifically, it aims at providing a method of creating value by changing the use of the abrasive material to the other side, rather than separating and reusing the abrasive material.

The above object is also achieved by a method of recovering a waste water, comprising: a collection step of collecting various discharges generated through a water jet operation; A water removal step for removing a part of water from the collected emission; A raw material mixing step in which an adhesive hardening agent is added to an effluent in which water is partially removed and uniformly mixed to provide a raw material mixture; A molding step of compression-molding the mixed raw material with a molding mold so as to have a three-dimensional shape; And a drying step of drying the molded article to remove moisture. The present invention also provides a method of recycling waste by hydraulic cutting.

According to an aspect of the present invention, an impurity separation step for removing impurities may be further included between the water removal step and the raw material mixing step.

According to another aspect of the present invention, the drying step may include a high-temperature drying step of drying at a high temperature and a natural drying step at a normal temperature.

According to the above configuration, a method of reducing environmental pollution by recycling various kinds of waste generated incidentally in the hydraulic cutting process without disposing the waste, and reducing costs due to disposal of the waste is suggested. More specifically, it is possible to provide a structural material having various textures and physical characteristics by reproducing industrially useful materials using the emission.

1 is a process diagram of a method according to an embodiment of the present invention.
2 is a block diagram of a system for implementing a method according to an embodiment of the present invention.

Hereinafter, the present invention will be described in detail with reference to the accompanying FIGS. 1 to 2 at the same time.

The present invention provides a method for producing an industrially utilizable structural material using various foreign substances generated through a water jet operation, that is, an emission M1. As a discharge M1 during hydraulic cutting, a fine grain separated from the abrasive itself and the workpiece will be common. Therefore, depending on whether the workpiece W is what, the emission M1 will contain various components. For example, iron powder, aluminum powder, copper powder, and stone powder. It goes without saying that the composition of the emission M1 may be determined depending on whether the abrasive is used or not. The abrasive material is an artificial abrasive using alumina or the like and a natural abrasive such as diamond.

Structural materials can be building or civil engineering materials such as bricks and blocks. However, the structural material may be used as an interior material or may be used for various other purposes.

The effluent M1 generated at the processing site contains water and is stored in the storage tank 1. The discharge M1 from the storage tank 1 is collected manually or by an automated process (S10). The collected effluent M1 is introduced into the dehydrating tub 3 and part of the water is removed from the dehydrating tub 3 rotated (S20). The dehydration tub 3 is a step for removing the water so that the effluent M1 has a viscosity that can be molded, for example, a viscosity similar to that of a dough or a cement mortar. The dehydration tub 3 includes a cylinder having a dewatering hole of a diameter capable of dropping water, and thus the water is dewatered while being rotated.

The effluent M1 having a viscosity is supplied to the raw material mixing step S30. The raw material mixing step S30 may include a stirring tank 5 and an agitator 7. [ An adhesive hardening agent is fed into the stirring tank 5 from the adhesive hardening agent supplying section 9 and the stirrer 7 uniformly mixes the adhesive hardening agent and the discharge M1 to produce a mixed raw material M2. The adhesive hardening agent and the amount thereof may be variously selected depending on the purpose of use of the structural material. The adhesive curing agent may be an epoxy-based curing agent or a cement mortar. In some cases, it may be a liquid urethane, and a known curing agent may be used. The mixed raw material M2 is supplied to the shaping mold 11 before the curing time passes and is compression molded (S40). The forming mold 11 may vary depending on the shape of the structural material, and the mixed raw material M2 may be heated to a high temperature to promote curing.

Thereafter, a drying step (S50) for drying the molded product (M3) to remove moisture is performed. The drying step (S50) may include a high-temperature drying step of drying at a high temperature and a natural drying step at a room temperature. In the high-temperature drying step, air heated by the heating wire 13 is supplied by the first blower 15, and in the natural drying step, air of a normal temperature is supplied by the second blower 17. The molded product M3 can be dried while continuously conveyed along the conveyor 19. [ In some cases, it may be uniformly fired and dried at a high temperature in a state of being put in a high-temperature drying furnace (not shown).

According to an embodiment of the present invention, an impurity separation step (S25) for removing impurities may be further included between the water removal step (S20) and the raw material mixing step (S30). The impurities may be sludge, oil, and the like. If it is necessary to prevent rusting of the structural material, the iron may be removed. The molded article M3 as the structural material according to the present invention is continuously discharged along the conveyor in a subsequent process, and is then stacked or packaged (S60).

According to another embodiment of the present invention, a coating step S45 may be further included between the molding step S40 and the drying step S50. The coating step S45 may be performed to improve the durability of the structural material or to prevent corrosion, and may further be carried out to give a color for the aesthetic appearance. The coating may be a conventional oil paint, urethane or epoxy.

The configuration shown and described above is merely a preferred embodiment based on the technical idea of the present invention. It will be understood by those skilled in the art that various changes and modifications may be made without departing from the scope of the present invention.

1: Storage tank 3: Dewatering tank
5: stirring tank 7: stirrer
9: Adhesive hardener supply part 11: Molding mold
13: heating wire 15: first blower
17: Second blower M1: Emission
M2: raw material mixture M3: molded article
W: Workpiece

Claims

A collection step of collecting various discharges generated through a water jet operation; A water removal step for removing a part of water from the collected emission; A raw material mixing step in which an adhesive hardening agent is added to an effluent in which water is partially removed and uniformly mixed to provide a raw material mixture; A molding step of compression-molding the mixed raw material with a molding mold so as to have a three-dimensional shape; And a drying step of drying the molded article to remove moisture.

The method according to claim 1, further comprising an impurity separation step for removing impurities between the water removal step and the raw material mixing step.

The method according to claim 1, wherein the drying step comprises a high-temperature drying step of drying at a high temperature and a natural drying step performed at a normal temperature.

The method according to claim 1,
Further comprising a coating step between the molding step and the drying step using a oil paint, epoxy or urethane.