CN211233957U - Smelting soot feeding system - Google Patents

Abstract

The utility model aims at providing a measure accurate and stable-flow's smelting cigarette ash feeding system, utilize current buried scraper blade discharge end to copper concentrate screw feeder discharge end top to overhaul platform space installation screw weighing batcher, change technology feed volume through screw weighing batcher, and repair the purpose that reaches actual control feed volume through the parameter, the discharge gate of screw weighing batcher is not direct and flash stove concentrate nozzle links to each other, but throw the feed pipe of expecting screw feeder with the flash stove and link to each other, cigarette ash gets into the concentrate nozzle again together after with copper concentrate homogeneous mixing, thereby guarantee to get into the material flow stability of concentrate nozzle.

Description

Smelting soot feeding system

Technical Field

The utility model relates to a metallurgical field of smelting, concretely relates to smelt feed system of cigarette ash.

Background

The ash is used as a raw material of the flash furnace and needs to be put into the flash furnace to be combusted with the copper concentrate according to a specific ratio, so the ash needs to be weighed and metered to control the feeding amount. The ash metering method used in the prior art is a punching plate flowmeter which mainly comprises a sensor, a punching plate, a box body, an integrator and the like, wherein the measuring principle is based on a momentum principle, the force caused by leading free falling granular media (ash) to the punching plate through a chute and the displacement of the punching plate when materials slide downwards on the punching plate are realized, the sensor detects the change of the displacement of the punching plate and converts the change into an electric signal, and an instantaneous value and an accumulated value are displayed through the operation processing of the integrator, so that the measurement is influenced when the blanking is not uniform or the particle size is different. However, the discharge hole of the impact plate flowmeter is directly connected with the concentrate nozzle of the flash furnace, when the internal pressure (negative pressure) of the furnace is increased, the suction force to the ash is larger, some ash cannot impact the impact plate and is directly sucked into the flash furnace, and meanwhile, the internal pressure of the furnace also has the suction influence on the impact plate, so that the ash is influenced by the internal pressure of the furnace when the impact force of materials is measured by using the impact plate flowmeter, and the measurement error is large.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a measurement is accurate and stable's of flow smelts feed system of cigarette ash.

In order to realize the purpose, the utility model discloses a technical scheme be: the utility model provides a smelt feeding system of cigarette ash, be provided with in the frame with scrape the discharging pipe that the trigger discharge gate links to each other, the lower extreme of discharging pipe links to each other with the feed inlet of spiral weighing feeder, the discharge gate of spiral weighing feeder is linked together with the feed pipe of throwing material spiral feeder of flash stove, spiral weighing feeder is attached to have weighing sensor and tacho sensor, weighing sensor and tacho sensor gather the weight and the speed of cigarette ash in the spiral weighing feeder and transmit for control system.

Among the above-mentioned scheme, utilize current buried scraper blade discharge end to copper concentrate screw feeder discharge end top to overhaul platform space installation screw feeder, change technology feed rate through screw feeder, and fix the purpose that reaches actual control feed rate through the parameter, screw feeder's discharge gate is not direct continuous with flash stove concentrate nozzle, but throw material screw feeder's feed pipe with the flash stove and link to each other, cigarette ash gets into the concentrate nozzle again together after evenly mixing with the copper concentrate, thereby guarantee to get into the material flow stability of concentrate nozzle.

Drawings

Fig. 1 is a schematic diagram of the overall structure of the system.

Detailed Description

As shown in figure 1, a feeding system for smelting cigarette ash is provided with a discharging pipe 20 connected with a discharging port of a scraper conveyor on a frame 10, the lower end of the discharging pipe 20 is connected with a feeding port of a spiral weighing feeder 30, the discharging port of the spiral weighing feeder 30 is communicated with a feeding pipe of a feeding spiral feeder of a flash furnace, the spiral weighing feeder 30 is additionally provided with a weighing sensor and a speed measuring sensor, and the weighing sensor and the speed measuring sensor acquire the weight and the speed of cigarette ash in the spiral weighing feeder 30 and transmit the weight and the speed to a control system. According to the on-the-spot particularity in smelting workshop, utilize current buried scraper blade discharge end to copper concentrate screw feeder discharge end top to overhaul platform space (6m) and install screw weighing feeder 30, change technology feed rate through screw weighing feeder 30, and repair the purpose that reaches actual control feed rate through the parameter, screw weighing feeder 30's discharge gate is not direct continuous with flash stove concentrate nozzle, but throw the feed pipe of material screw feeder with the flash stove and link to each other, cigarette ash gets into the concentrate nozzle again together after evenly mixing with the copper concentrate, thereby guarantee to get into the material flow stability of concentrate nozzle. The system realizes that the ash is uniformly added into a feeding system for smelting in the flash furnace, and has short process flow, less investment and simple operation; compared with the original impact plate flowmeter, the flowmeter not only can meet the requirement of production control, but also overcomes the influence of the furnace internal pressure on the metering.

In order to check the feeding error problem of the feeding machine 30 in the spiral balance, a measuring bin 40 is further arranged between the discharging pipe 20 and the discharging port of the scraper conveyor, a weighing sensor is additionally arranged on the measuring bin 40, the weighing sensor collects the amount of ash in the bin and feeds the amount of ash back to a control system, a discharging conical pipe 41 with a thick upper part and a thin lower part extends downwards from the lower part of the measuring bin 40, and the lower end of the discharging conical pipe 41 is connected with the upper end of the discharging pipe 20. The feeding taper pipe 41 is in a conical shape with the upper part being square and the lower part being square and round, and the arrangement mode can ensure that the discharge hole of the lower conical section can enter the spiral weighing feeder 30 without any obstruction. According to the acquisition information of the weighing sensor, the volume of the bin can be checked at any time, and the volume can be fed back timely, so that the feeding quantity of the scraper conveyor can be controlled, the feeding quantity is prevented from being influenced by too little material of the bin, and the bin is prevented from overflowing too much.

The specific structure is that a material guide pipe 42 is arranged in the metering bin 40, and a pipe core of the material guide pipe 42 is superposed with a pipe core of the blanking taper pipe 41, because the system is specially designed for smoke dust conveying, the properties of the smoke dust are mainly considered: the water content is less than or equal to 0.3 percent, the granularity is small, the temperature is high, and the material is easy to agglomerate into lumps due to certain viscosity, the material guide pipe 42 has the function of distributing materials, and the materials agglomerated into lumps in the storage bin can be scattered and enter the discharging conical pipe 41 from the outer side of the material guide pipe 42; the upper end of the guide tube 42 penetrates through the top of the metering bin 40 and extends to the outside, the tube section of the guide tube 42 protruding to the outside is fixedly connected with the metering bin 40, the lower end of the guide tube 42 is connected with a conical tube 43 with a small upper part and a large lower part, the lower end of the conical tube 43 protrudes into the discharging conical tube 41, and connecting ribs are uniformly arranged on the outer wall of the conical tube 43 along the circumferential direction at intervals and fixedly connected with the inner wall of the metering bin 40. In order to ensure the stability of the material guide pipe 42, the upper end of the material guide pipe 42 is fixedly connected with the metering bin 40, and the conical cylinder 43 at the lower end is fixedly connected with the inner wall of the metering bin 40 through a connecting rib, so that the stability is ensured; the cone 43 is important for the soot agglomerated into a lump to hit the surface of the cone 43 and be scattered and uniformly enter the feeding cone 41, and for the soot to fall at a reduced speed and be buffered, and for the gas in the hopper to enter the guide tube 42 from the cone 43 and be discharged from the guide tube 42 to the outside of the metering hopper 40.

A gate valve 50 for controlling the blanking amount of the blanking taper pipe 41 is arranged at the joint of the blanking taper pipe 41 and the discharge pipe 20. The gate valve 50 can stop the material when the spiral weighing feeder 30 is maintained, and can also control the amount of the discharged material according to the instruction of the control system.

Four corners of the lower part of the metering bin 40 of the blanking taper pipe 41 are respectively provided with 1, 4 groups of gate valves 50, discharge pipes 20, material guide pipes 42 and the spiral weighing feeders 30 are correspondingly arranged, and the 4 groups of spiral weighing feeders 30 are spatially staggered and arranged in an avoiding way. 4 groups of spiral weighing feeders 30 can be arranged on different floors in a staggered and avoiding way according to the space condition of the site.

Cigarette ash will measure when passing through spiral weighing feeder 30, therefore weighing sensor's mounted position both will consider reducing the impact of material and influence, the stability of material through the measurement section is also considered, still must solve the convenience of the daily check-up of spiral balance, the reliability is so that measure and detect, so with the distance of weighing sensor's mounting point to the stress point that cigarette ash falls on spiral weighing feeder 30 in spiral weighing feeder 30 and the distance of weighing sensor's mounting point to the discharge gate of spiral weighing feeder 30 integer multiple relation, in order to guarantee the precision of measuring and check-up.

Scrape trigger and measurement feed bin 40 inevitable meeting production vibration in normal working process, in order to reduce the influence of last one-level vibration to next one-level, all link to each other through hose 60 between the feed inlet of measurement feed bin 40 and the trigger discharge gate and between unloading taper pipe 41 and the spiral weighing feeder 30, hose 60 include outside sealed canvas, be provided with wear-resisting pipe in the canvas. Through the setting of hose 60, the vibration of scraping the trigger can not transmit measurement feed bin 40, and the vibration of unloading taper pipe 41 also can not transmit the spiral weighing feeder 30 on, further improved the measurement precision of spiral at weighing feeder 30, conveniently solved simultaneously and made the error value of feed flow not receive outside interference when the check-up spiral weighing feeder 30 of different periods of time.

The discharge port of the screw weighing feeder 30 is connected with a chute 31, and the chute 31 is communicated with the feeding pipe of the feeding screw feeder of the flash furnace. The length, the angle and the direction of the chute 31 can be set according to actual needs, so that the ash can smoothly enter the lower-layer conveying mechanism.

Claims (8)

1. The utility model provides a smelt feeding system of cigarette ash, be provided with in frame (10) with scrape discharging pipe (20) that trigger discharge gate links to each other, its characterized in that: the lower extreme of discharging pipe (20) links to each other with the feed inlet of screw weighing feeder (30), and the discharge gate of screw weighing feeder (30) is linked together with the feed pipe of throwing material screw feeder of flash stove, and screw weighing feeder (30) are attached to have weighing sensor and tacho sensor, and weighing sensor and tacho sensor gather the weight and the speed of cigarette ash in screw weighing feeder (30) and transmit for control system.

2. A metallurgical soot feeding system according to claim 1, wherein: a metering bin (40) is further arranged between the discharging pipe (20) and the discharging port of the scraper conveyor, a weighing sensor is additionally arranged on the metering bin (40), the weighing sensor collects the amount of the ash in the bin and feeds the amount back to a control system, a discharging conical pipe (41) with a thick upper part and a thin lower part extends downwards on the lower part of the metering bin (40), and the lower end of the discharging conical pipe (41) is connected with the upper end of the discharging pipe (20).

3. A metallurgical soot feeding system according to claim 2, wherein: be provided with passage (42) in measurement feed bin (40), the tube core of passage (42) coincides with the tube core of unloading taper pipe (41), the top of measurement feed bin (40) is passed and is extended to the outside in the upper end of passage (42), protruding passage (42) pipeline section and the measurement feed bin (40) fixed connection who extends to the outside, the lower extreme of passage (42) is connected with big end down's circular cone section of thick bamboo (43), protruding the lower extreme of circular cone section of thick bamboo is evenly along circumference in unloading taper pipe (41) and on the outer wall of circular cone section of thick bamboo (43), the interval is provided with the inner wall fixed connection of splice bar and measurement feed bin (40).

4. A metallurgical soot feeding system according to claim 2, wherein: a gate valve (50) for controlling the blanking amount of the blanking taper pipe (41) is arranged at the joint of the blanking taper pipe (41) and the discharge pipe (20).

5. A metallurgical soot feeding system according to claim 4, wherein: four corners of the lower part of the metering bin (40) of the blanking taper pipe (41) are respectively provided with 1, 4 groups of gate valves (50), discharge pipes (20), material guide pipes (42) and spiral weighing feeders (30) are also correspondingly arranged, and the 4 groups of spiral weighing feeders (30) are arranged in a staggered and avoiding mode in space.

6. A metallurgical soot feeding system according to claim 5, wherein: the distance from the mounting point of the weighing sensor in the spiral weighing feeder (30) to the stress point of the cigarette ash falling on the spiral weighing feeder (30) and the distance from the mounting point of the weighing sensor to the discharge hole of the spiral weighing feeder (30) are in integral multiple relation.

7. A metallurgical soot feeding system according to claim 1, wherein: the feed inlet of measurement feed bin (40) and scrape between the trigger discharge gate and all link to each other through hose (60) between unloading taper pipe (41) and the spiral weighing feeder (30), hose (60) including outside sealed canvas, be provided with wear-resisting pipe in the canvas.

8. A metallurgical soot feeding system according to claim 7, wherein: the discharge hole of the spiral weighing feeder (30) is connected with a chute (31), and the chute (31) is communicated with the feeding pipe of the feeding spiral feeder of the flash furnace.

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