CN202017029U - Short-flow stuffy slag water returning device - Google Patents

Abstract

The utility model relates to a short-flow slag return device, which comprises a slag pool, a sedimentation tank, a water purification pool, and a water absorption pool. The bottom of the sedimentation pool and the water purification pool is lower than the bottom of the slag pool, and It is connected with the sedimentation tank, an overflow port is provided between the sedimentation tank and the water purification tank, and a submersible pump is installed in the water purification tank; the water purification tank is connected with the suction tank through a connecting pipe; the water suction tank is connected with the slag tank through a connecting pipe. This device shortens the flow of the traditional steel slag hot and stuffy return water system, has a simple structure, does not need to build underground pipeline corridors, greatly reduces construction investment, facilitates desilting of the sedimentation tank, effectively solves the problem of pipe wall scaling, and realizes stuffy slag water recycling.

Description

A short-flow slag return device

technical field

The utility model relates to a short-flow backwater process in the production process of steel slag hot stuffiness.

Background technique

Currently, in the hot stuffy process of converter steel slag, the steel slag is poured into the stuffy slag pool to draw water for cooling. The water stored in the water absorption pool is pumped to draw water for the slag pools. Except for some of the slag flushing water seeping through the gaps in the steel slag to the bottom, it enters the backwater pipeline corridor through the pipeline, and there is drainage in the pipeline corridor. ditch or drainage pipe, the return water flows into the return water well through the drainage ditch or drainage pipe, and the submersible pump placed in the well pumps the water to the sedimentation tank on the ground for sedimentation. water cycle.

The backwater process is long, complicated, and has many pipelines. It is necessary to build pipeline corridors underground, which increases a lot of construction investment; the cooling effect of the cooling tower is not good. Compared with high-temperature steel slag, the temperature drop of the backwater can be ignored, which increases the Construction cost; and the return water temperature is high and part of the water evaporates and loses during the process of passing through the cooling tower, which reduces the return water circulation rate; the steel slag is alkaline, and the slag flushing water is recycled, the pipe wall is scaled obviously, and maintenance is inconvenient; the return water well and the sedimentation tank It is also often necessary to clean up the sediment during use. The sedimentation tank located on the ground uses a grab bucket to desilt. The operation is complicated and the effect is not good.

Contents of the invention

The purpose of this utility model is to provide a short-flow stuffy slag return water device, which shortens the process flow of the traditional steel slag hot stuffy backwater system, has a simple structure, does not need to build underground pipeline corridors, greatly reduces construction investment, and clears the sedimentation tank. It is convenient to silt, effectively solves the problem of pipe wall scaling, and realizes the recycling of slag water.

In order to achieve the above object, the utility model is realized through the following technical solutions:

A short-flow slag return device, comprising a slag tank, a sedimentation tank, a water purification tank, and a water absorption tank, characterized in that the bottom of the sedimentation tank and the water purification tank is lower than the bottom of the slag tank, and the bottom of the slag tank is There is a wire mesh cage containing large-grained ore at the exit, and the outlet at the bottom of the slag tank is connected to the sedimentation tank. There is an overflow port between the sedimentation tank and the water purification tank, and a submersible pump is installed in the water purification tank; It is connected with the water absorption pool; the water absorption pool and the slag pool are connected by connecting pipes.

A dosing device is arranged above the water-absorbing pool.

A grid sieve for filtering is arranged in the water-absorbing pool.

The sedimentation tank, the water purification tank and the water suction tank are all built below the ground.

Compared with the prior art, the beneficial effects of the utility model are:

1) The utility model has a short-flow stuffy slag return process. The sedimentation tank and the water purification tank adopt the self-flow method, which shortens the return process and reduces the cost of pipeline installation. It does not need to install cooling towers on the ground and build underground pipeline corridors , significantly reducing construction investment;

2) Due to the cancellation of the cooling tower in the water absorption pool, the evaporation loss of water vapor is reduced, the amount of supplementary water is reduced, and the return water circulation rate is improved;

3) There is a dosing device on the upper part of the water absorption pool to soften the water quality and effectively prevent pipeline scaling;

4) The sedimentation tank and the water absorption tank are located underground, and the excavator can be used to desilt at any time, which is simple, convenient, time-saving and labor-saving;

5) There is a grid screen in the water absorption pool, which can further filter the water.

Description of drawings

Fig. 1 is the structural diagram of the short-flow stuffy slag return water device of the utility model;

Fig. 2 is a structural schematic diagram of the slag return system in the prior art.

In the figure 1-slag tank 2-sedimentation tank 3-water purification tank 4-suction tank 5-grid sieve 6-water pump 7-supplementary water 8-dosing tank 9-cooling tower 10-backwater well 11-pipeline corridor 12 -submersible pump 13-wire mesh cage

Detailed ways

As shown in Figure 1, a short-flow slag return device includes a slag tank 1, a sedimentation tank 2, a water purification tank 3, and a water absorption tank 4. The sedimentation tank 2 and the water purification tank 3 are built underground. The bottom of pool 3 is lower than the bottom of stuffy slag pool 1. The backwater at the bottom of the slag pool 1 passes through the steel mesh cage 13 equipped with large-grained ore to intercept the large impurities, and the water flows through the drainage ditch to the sedimentation tank 2 for sedimentation and then overflows to the clean water pool 3. Each slag pool corresponds to A settling tank and a water purification tank, the water purification tank 3 is provided with a submersible pump 12, and the clean water is pumped into a public underground water absorption tank 4, and added to the water absorption tank 4 after dispensing in the medicine box 8, which can soften the water quality and prevent Piping fouling.

The clean water tank 3 is provided with a grid sieve 5, and the grid screen 5 is made of a double-layer net filling filter material (coke, etc.), which can further filter the water. The water pump 6 pumps water out of the water-absorbing pool 4 passing through the grid screen to fetch water for each slag pool, and the supplementary water 7 is directly connected to the water-absorbing pool to automatically control the replenishment amount through the liquid level gauge placed in the pool to supplement the water lost due to evaporation. Slag water.

Sedimentation tank 2, clean water tank 3 and water absorption tank 4 are all built in underground, are provided with cover plate at ordinary times, regularly clean up silt with excavator according to actual conditions.

Claims (4)

1. one kind short vexed slag water recovery apparatus of flow process, comprise vexed slag bath, settling tank, water purifying tank, priming reservoir, it is characterized in that, described settling tank and water purifying tank bottom are lower than vexed slag bath bottom, vexed slag bath outlet at bottom place is provided with the woven wire cage of splendid attire macrobead ore, vexed slag bath outlet at bottom is communicated with settling tank, is provided with overflow port between settling tank and the water purifying tank, is provided with submersible pump in the water purifying tank; Water purifying tank is communicated with the priming reservoir by connecting tube; The priming reservoir is connected by connecting tube with vexed slag bath.

2. the vexed slag water recovery apparatus of a kind of short flow process according to claim 1 is characterized in that top, described priming reservoir is provided with chemicals dosing plant.

3. the vexed slag water recovery apparatus of a kind of short flow process according to claim 1 and 2 is characterized in that, is provided with the diagrid of filtration in the described priming reservoir.

4. the vexed slag water recovery apparatus of a kind of short flow process according to claim 1 and 2 is characterized in that described settling tank, water purifying tank, priming reservoir all are built in below ground.

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