阅读说明：本技术 一种冶炼过程中可控制炉温的自动加煤装置 (Automatic coal feeding device capable of controlling furnace temperature in smelting process ) 是由 陈波 姜交华 于 2020-07-01 设计创作，主要内容包括：本发明公开了一种冶炼过程中可控制炉温的自动加煤装置,包括有直接伸入前床炉膛内的喷煤管,喷煤管位于前床炉膛外的一端连接有喷煤机；所述前床炉膛内设有温度计,温度计与喷煤机连接在电脑控制系统上。本发明具有工人劳动强度小,利于现场管理,前床炉膛温度易控制,辅料消耗成本相对较低,且前床炉膛内温度分布较均匀,利于渣锑分离的特点；此外,还具有可简化炉膛结构的特点。(The invention discloses an automatic coal feeding device capable of controlling the furnace temperature in the smelting process, which comprises a coal injection pipe directly extending into a front bed hearth, wherein one end of the coal injection pipe, which is positioned outside the front bed hearth, is connected with a coal injection machine; a thermometer is arranged in the front bed hearth, and the thermometer and the coal injection machine are connected on a computer control system. The invention has the characteristics of low labor intensity of workers, contribution to field management, easy control of the temperature of the front bed hearth, relatively low consumption cost of auxiliary materials, more uniform temperature distribution in the front bed hearth and contribution to slag-antimony separation; in addition, the structure of the hearth can be simplified.)

1. The utility model provides an automatic coal charging device of steerable furnace temperature in smelting process which characterized in that: comprises a coal injection pipe (2) directly extending into a front bed hearth (1), wherein one end of the coal injection pipe (2) positioned outside the front bed hearth (1) is connected with a coal injection machine (3); a thermometer (6) is arranged in the front bed hearth (1), and the thermometer (6) and the coal injection machine (3) are connected to a computer control system.

2. The automatic coal feeding device capable of controlling the furnace temperature in the smelting process according to claim 1, which is characterized in that: the thermometer (6) is a thermocouple.

3. The automatic coal feeding device capable of controlling the furnace temperature in the smelting process according to claim 1, which is characterized in that: a storage box (4) is arranged above a feed inlet of the coal sprayer (3), and a discharge outlet of the storage box (4) is aligned with the feed inlet of the coal sprayer (3).

4. The automatic coal feeding device capable of controlling the furnace temperature in the smelting process according to claim 3, characterized in that: the discharge port of the storage box (4) is provided with a vibrating feeder (5), and the discharge port of the vibrating feeder (5) is aligned to the feed port of the coal sprayer (3).

Technical Field

The invention relates to an automatic coal feeding device, in particular to an automatic coal feeding device capable of controlling the furnace temperature in the smelting process.

Background

The antimony ore smelting is to heat a hearth at high temperature by burning coal, so that the antimony ore is melted for smelting. A traditional antimony ore smelting hearth is shown in figure 2 and comprises a front bed hearth 1 and a fire hearth 7 for burning coal, wherein after block-shaped burning coal is burnt in the fire hearth, flame and high-temperature gas enter the front bed hearth to heat the front bed hearth.

The problems of the hearth adopted at present are that: 1. workers are required to add coal and shovel coal slag, so that the labor intensity of the workers is high, and the field management is not facilitated; 2. because the operating skills and responsibility centers of workers are different, the temperature fluctuation in the front bed hearth is large, and the control of the temperature of the front bed hearth is not facilitated; 3. in the traditional fire chamber type heating mode, the burning coal is not completely burnt, and part of unburned coal is shoveled out, so that the consumption cost of auxiliary materials is increased; 4. traditional fire chamber formula heating methods, it is higher to be close to fire chamber department temperature, and it is lower to keep away from fire chamber department temperature, leads to the temperature distribution inequality, is unfavorable for the separation of sediment antimony.

Disclosure of Invention

The invention aims to provide an automatic coal feeding device capable of controlling the furnace temperature in the smelting process. The invention has the characteristics of low labor intensity of workers, contribution to field management, easy control of the temperature of the front bed hearth, relatively low consumption cost of auxiliary materials, more uniform temperature distribution in the front bed hearth and contribution to slag-antimony separation; in addition, the structure of the hearth can be simplified.

The technical scheme of the invention is as follows: an automatic coal feeding device capable of controlling the furnace temperature in the smelting process comprises a coal injection pipe directly extending into a front bed hearth, wherein one end of the coal injection pipe, which is positioned outside the front bed hearth, is connected with a coal injection machine; a thermometer is arranged in the front bed hearth, and the thermometer and the coal injection machine are connected on a computer control system.

In the automatic coal feeding device capable of controlling the furnace temperature in the smelting process, the thermometer is a thermocouple.

In the automatic coal feeding device capable of controlling the furnace temperature in the smelting process, the storage box is arranged above the feed inlet of the coal sprayer, and the discharge outlet of the storage box is aligned with the feed inlet of the coal sprayer.

In the automatic coal feeding device capable of controlling the furnace temperature in the smelting process, the discharge port of the storage box is provided with the vibrating feeder, and the discharge port of the vibrating feeder is aligned to the feed port of the coal sprayer.

The invention has the advantages of

1. According to the invention, the coal sprayer is arranged, and the coal spraying pipe is used for directly spraying the coal powder into the hearth of the front bed, so that the operations of coal feeding and coal slag shoveling by workers are not needed, only 1 person is needed to monitor the coal powder on site at regular time, the labor intensity of the workers is greatly reduced, and the site management is more facilitated.

2. According to the invention, the thermometer is arranged in the front bed hearth, the thermometer and the coal sprayer are connected to the computer control system together, and the computer control system controls the coal spraying speed and the coal spraying amount of the coal sprayer according to the temperature feedback of the thermometer in the front bed hearth, so that the effect of controlling the temperature in the front bed hearth in real time is achieved, and the temperature in the front bed hearth is controlled more simply and easily.

3. The pulverized coal is directly sprayed into the front bed hearth through the coal spraying machine, so that the pulverized coal is more sufficiently combusted, the condition that the pulverized coal is removed after being unburnt is avoided, and the consumption cost of auxiliary materials is greatly reduced.

4. The pulverized coal is directly sprayed into the hearth of the front bed for combustion, so that the high temperature generated by combustion is more uniformly distributed in the hearth of the front bed, and the separation of slag and antimony is facilitated.

5. The device of the invention omits the arrangement of the traditional fire chamber, and greatly simplifies the structure of the fire chamber.

6. In terms of cost savings on coal burning: the traditional hearth heating furnace consumes 4.5 tons of bituminous coal per day on average, has the consumption rate of 66.7 KG/ton of antimony material and has the cost of 176 yuan/ton of metal antimony. By using the device, the bituminous coal is saved by 2 tons/day, and the cost of the bituminous coal is saved by 78 ten thousand yuan per year according to the calculation of 300 days and 1300 yuan/ton production. In the aspect of labor cost saving: compared with the traditional mode, 3 workers for coalers are reduced, and the labor cost is saved by about 13 ten thousand yuan/year.

Drawings

FIG. 1 is a schematic structural diagram of the present invention;

fig. 2 is a schematic structural view of a conventional furnace.

Description of reference numerals: 1-a front bed hearth, 2-a coal injection pipe, 3-a coal injection machine, 4-a storage box, 5-a vibrating feeder, 6-a thermometer and 7-a fire chamber.

Detailed Description

The present invention is further illustrated by the following examples, which are not to be construed as limiting the invention.

Examples of the invention

An automatic coal feeding device capable of controlling furnace temperature in a smelting process is shown in figure 1 and comprises a coal injection pipe 2 directly extending into a front bed hearth 1, wherein one end of the coal injection pipe 2, which is positioned outside the front bed hearth 1, is connected with a coal injection machine 3; a thermometer 6 is arranged in the front bed hearth 1, and the thermometer 6 and the coal sprayer 3 are connected on a computer control system.

During smelting, antimony ore is placed in a front bed hearth 1, coal powder is sprayed into the front bed hearth 1 through a coal spraying pipe 2 by a coal sprayer 3 to be combusted and heated, and the coal spraying speed and the coal spraying amount of the coal sprayer 3 are adjusted in real time according to the temperature fed back by a thermometer 6; when the temperature in the front bed hearth 1 fed back by the thermometer 6 is within the set range of the smelting temperature, the computer control system acquires the temperature signal and controls the coal injection machine 3 to stop coal injection, and when the temperature signal shows that the temperature is about to fall below the set temperature range, the computer control system acquires the temperature signal and simultaneously controls the coal injection machine 3 to work, a certain amount of coal powder is injected into the front bed hearth 1 to be combusted, the temperature in the front bed hearth 1 is increased, and the temperature in the front bed hearth 1 is always in the smelting temperature range.

As the temperature in the hearth 1 of the front bed is very high, the thermometer 6 selects a high-temperature-resistant thermocouple, and the current range of the detected temperature signal is 4-20 mA.

In order to feed the coal sprayer 3 conveniently, a storage box 4 is arranged above the feed inlet of the coal sprayer 3, and the discharge outlet of the storage box 4 is aligned with the feed inlet of the coal sprayer 3.

In order to facilitate the feeding of the pulverized coal in the storage box 4 into the coal sprayer 3, a vibrating feeder 5 is arranged at the discharge port of the storage box 4, and the discharge port of the vibrating feeder 5 is aligned with the feed port of the coal sprayer 3.

The above description is only for the purpose of illustrating the present invention and the appended claims, and the scope of the present invention is not limited thereto, and any person skilled in the art can substitute or change the technical solution and the inventive concept of the present invention within the technical scope of the present invention.