RU2586179C2 - Section for receiving and processing chips of ferrous and nonferrous metals - Google Patents

Abstract

FIELD: metallurgy.

SUBSTANCE: invention can be used at factories of machine building and metallurgy for processing steel and iron chips into dense, durable briquettes, free from impurities. Equipment consists of in-series installed septic tank for receiving lubricating-cooling liquids 1, receiving hopper for chips 2 assembled with flute, chip crusher 3, conveyor to feed crushed chips 4, intermediate hopper with screw feeder 5, chip supply conveyor 6, briquetting press 7, briquette accumulator 8, briquettes feed conveyor 9 and movable container-accumulator of ready briquettes 10. Chip receiving hopper has inclined bottom 5°, and conveyor to feed crushed chips and conveyor for feeding chips are made steeply inclined at an angle of 45°.

EFFECT: invention provides cleaning of chips from lubricating-cooling liquids in natural way, reduction of production area, high density of briquettes, operational mode setting briquetting and removal on reprocessing briquettes with friability not at normal.

1 cl, 2 dwg

Description

FIELD OF TECHNOLOGY

The present invention relates to the field of metallurgy and can be used in factories of machine-building and metallurgical industries for the processing of steel and cast-iron shavings into dense, durable briquettes free from contamination.

BACKGROUND

The prior art known "method of briquetting steel chips" according to patent RU 2354723 C1, published on 05/10/2009. The description of the above patent contains a list of equipment necessary for crushing, cleaning, heating, adding binder materials, mixing and compaction.

Thus, the equipment for briquetting steel chips includes a hopper, a crusher, a feeding tray, a smooth-walled drum, a heating furnace, an inductor, a neutralization device, and a mold.

Twisted shavings, which are used for briquetting, have a number of disadvantages, namely: transportation costs with low bulk weight; loss of charge during remelting and contamination of the chips with cutting fluids.

When briquetting steel chips using equipment according to the patent RU 2354723 C1, there are the following disadvantages:

- cleaning of cutting fluids is carried out using special equipment and in heating furnaces, which creates additional energy costs;

- cutting fluids are not collected for subsequent disposal, which leads to non-compliance with environmental regulations;

- cleaning chips from lump fractions is not provided, which leads to equipment breakdown;

- there is no receiving and intermediate bunkers, which leads to irregular operation of the site and reduced productivity.

The closest analogue (prototype) may be the "Automatic line for processing metal chips" according to patent RU 48328 U1, published 10.10.2005,

This automatic metal chip processing line, comprising successively mounted receiving hopper with dispenser, a cold briquette press, a heating device with loading and unloading briquettes, a hot stamping press with a stamp and conveying conveyors, characterized in that the briquette loading mechanism on the conveyor of the heating device is made in the form of a pneumatic cylinder and a traverse, one of which is equipped with swinging levers with rollers and is mounted on the rod of the pneumatic cylinder, and the second tanovlena movable in guides and is provided with limiters, and rods.

The disadvantages of this automatic line in the industrial production of briquettes from metal chips are:

- there is no chip mill with a separating mechanism from lumpy and large fractions;

- the removal of cutting fluids is carried out using heating furnaces, which increases the energy intensity of the process and cost;

- two technological pressing positions are used, which increases the cost and maintenance costs of the automatic line for processing metal chips.

The task underlying the present invention is to create a site for the reception and processing of shavings of ferrous and non-ferrous metals of a structure free from these drawbacks inherent in technical solutions representing the prior art.

This problem is solved due to the fact that the site for receiving and processing shavings of ferrous and non-ferrous metals consists of sequentially installed septic tank for receiving cutting fluids; chip receiving hopper assembly with gutter; chip mills; conveyor for feeding crushed chips; intermediate hopper with screw feeder; chip conveyor; briquetting press; briquette drive; briquette feed conveyor and a mobile container for finished briquettes storage; while the receiving hopper of the chip is made with a slope of the bottom of 5 degrees; the conveyor for feeding the crushed chips and the conveyor for feeding the chips are steeply inclined with an angle of inclination of 45 degrees, and the volume of the mobile container of the drive for finished briquettes is equal to the volume of the truck body.

The technical result of the invention is that:

- a large amount of chips is received, cutting fluids are able to drain along the bottom, tray and further into the collection tank of cutting fluids, from where they are disposed of, due to the fact that the chip receiving hopper is made of large volume with a slope of 5 degrees, that allows you to naturally clean chips from cutting fluids, collect and dispose of it;

- the required production area of the site has been reduced due to the fact that steeply inclined belt conveyors with scrapers on the belt web are installed with an angle of inclination of 45 degrees, which exceeds the angle of repose for bulk materials;

- it is possible to press briquettes of various sizes depending on the requirements of the customer, due to the fact that the press equipment is used in the site;

- increased the rhythmicity of the site, and also increases the density of briquettes, due to the fact that there is an intermediate hopper with a screw feeder;

- it is possible to carry out operational settings for briquetting and removal of briquettes for re-processing with crumbling not according to the norm, due to the fact that the briquette storage is used for inspection and volatile control of finished products;

- the overload of finished briquettes was reduced due to the fact that a mobile container equal to the volume of the truck body is used.

SUMMARY OF THE INVENTION

The invention is illustrated by a description and an example of practical use.

The invention is illustrated by drawings.

In FIG. 1 shows a plan of a site for the reception and processing of ferrous and non-ferrous metal shavings.

In FIG. 2 shows a section AA of the reception and processing of shavings of ferrous and non-ferrous metals.

At present, domestic metallurgy is experiencing a shortage in the scrap of ferrous and non-ferrous metals. According to analytical studies by RUSLOM.RU, the average security index for ferrous metallurgy enterprises in ferrous scrap is 0.30-0.399. The lack of ferrous scrap is forcing scrap suppliers and metallurgists to introduce additional capacities to produce better scrap of ferrous and non-ferrous metals from low-quality waste.

One of the reserves for scrap ferrous and non-ferrous metals is the shavings that are obtained after machining. But twisted shavings have a number of disadvantages, which are as follows: twisted shavings occupy large volumes with low weight, for example, the coefficient of occupied volume of twisted shavings is 0.2-0.35 at a density of 375 kg / m ³ ; loss of charge during remelting (due to the large percentage of metal waste, which is over 12 percent, with a norm of up to 6 percent); contamination of chips by cutting fluids.

All these shortcomings have influenced the creation of a site for the reception and processing of ferrous and non-ferrous metal chips, which can be located on the areas of mechanical production or as a separate production.

The site for the reception and processing of ferrous and non-ferrous metal shavings is an autonomously allocated production unit.

The composition of the site for the reception and processing of ferrous and non-ferrous metal shavings includes the following equipment: septic tank for receiving cutting fluids 1; chip receiving hopper 2, made with a slope of the bottom 5 degrees, complete with a chute; chip mill 3; steeply inclined feed conveyor 4; intermediate hopper with screw feeder 5; steeply inclined chip conveyor 6; briquetting press 7; briquette stacker 8; briquette feed conveyor 9; mobile storage container for finished briquettes 10.

DETAILED DESCRIPTION OF THE INVENTION

The working process of the reception and processing of shavings of ferrous and non-ferrous metals is as follows.

Chip enters the receiving hopper of chip 2, where the lubricant cooling fluids are naturally drained and separated from the chip along the slope of the bottom of the hopper, which is at least 5 degrees, then the lubricant coolant flows down the tray into the septic tank for receiving the lubricant coolants 1, from where they are disposed of.

Using a mobile loader (not shown conditionally in Fig. 1 and Fig. 2), the chip crusher 3 is loaded rhythmically. The chip crusher is equipped with devices that can automatically separate lumpy metal waste and pre-chop large pieces of twisted shavings. According to the steeply inclined conveyor for supplying crushed chips 4, crushed chips are fed into the intermediate hopper with a screw feeder 5. The volume of the intermediate hopper with a screw feeder 5 is selected based on the cyclic operation of the section, and the screw feeder mixes and breaks the chips, bringing it to the same size. The chips falling into the briquetting press 7, namely, into its loading hopper, are subjected to the pressing process and enter the briquette storage 8, where the finished briquettes are inspected and volatilely controlled. On the basis of inspection and volatile control, the pressing modes are adjusted. Then, the finished briquettes via the briquette feed conveyor 9 fall into the mobile container of the finished briquettes accumulator 10. The volume of the mobile container of the finished briquettes accumulator is designed for the vehicle carrying capacity and is equipped with a saddle device.

The site for the reception and processing of ferrous and non-ferrous metal shavings of this design is successfully produced by KurganAgroZapchast LLC. The launch and production of this site took place in December 2013.

Claims (1)

Equipment for the processing of ferrous and non-ferrous metal chips, characterized in that it consists of sequentially installed septic tank for receiving cutting fluids, chip receiving hopper assembled with a chute, chip crusher, chopped chip feed conveyor, intermediate hopper with a screw feeder, chip feed conveyor, Briquetting press, briquette stacker, briquette feed conveyor and a mobile storage box for finished briquettes, while the chip receiving hopper is made slant bottom 5 °, and the feed conveyor and feed fragmented swarf conveyor chip formed steeply inclined with an inclination angle of 45 °.

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