阅读说明：本技术 一种kr脱硫系统降低安装高度的优化改进方法 (Optimization improvement method for reducing installation height of KR desulfurization system ) 是由 曾涛 纪良浩 张飞宇 姚宇峰 岳文龙 陈学勇 曾凡飞 郭嘉 徐一民 于 2020-04-22 设计创作，主要内容包括：本发明涉及一种KR脱硫系统降低安装高度的优化改进方法,包括：1)优化搅拌系统；2)优化上料系统；3)优化换桨车系统；4)优化备用料仓系统；本发明能够使现有KR脱硫设施的安装高度降低约8.5米,从而成功地将高效、低成本的KR搅拌脱硫设施安装在低于20米的厂房内,有利于KR机械搅拌法脱硫工艺的推广应用。(The invention relates to an optimization and improvement method for reducing the installation height of a KR desulfurization system, which comprises the following steps: 1) optimizing a stirring system; 2) optimizing a feeding system; 3) optimizing a paddle changing vehicle system; 4) optimizing a spare storage bin system; the invention can reduce the installation height of the prior KR desulfurization facility by about 8.5 meters, thereby successfully installing the KR stirring desulfurization facility with high efficiency and low cost in a plant less than 20 meters and being beneficial to the popularization and application of the KR mechanical stirring desulfurization process.)

1. An optimized and improved method for reducing the installation height of a KR desulfurization system is characterized by comprising the following steps:

1) optimizing a stirring system; the number of layers of the stirring frame is reduced; a stirring frame is provided with 3 layers of frames, a lifting trolley buffer is arranged at the top of the 3 layers of frames, and a platform at the top of the stirring frame, corresponding to the lifting trolley, is provided with a hole for a stirring motor to pass through;

2) optimizing a feeding system; the stirring system platform is not provided with a storage bin which is arranged outside the stirring system platform; a material blowing tank is arranged at the bottom of the storage bin, and materials are conveyed into a weighing bin in the stirring system platform in a pneumatic feeding mode; a discharge hole at the bottom of the weighing bin feeds materials into the hot metal ladle in a gravity feeding mode through a feeding telescopic chute;

3) optimizing a paddle changing vehicle system; the diameter of the wheels of the paddle changing vehicle is reduced to 300mm, so that the height of the working surface of the paddle changing vehicle is reduced;

4) optimizing a spare storage bin system; moving the standby bin to the outer side of the stirring system platform, conveying the materials in the standby bin to the stirring system platform through a belt conveyor, and adding the materials into the molten iron tank through a discharging chute;

and the installation height of the optimized KR desulfurization system is not more than 20 meters.

Technical Field

The invention relates to the technical field of KR desulfurization, in particular to an optimization improvement method for reducing the installation height of a KR desulfurization system.

Background

Currently, a typical common molten iron desulfurization treatment method includes: blowing and KR mechanical agitation.

The desulfurization principle of the blowing method is as follows: using inert gas (nitrogen or argon) as gas carrier to remove desulfurizer (such as CaO, CaC)₂And Mg) is sprayed into molten iron by a spray gun, and the carrier gas plays a role in stirring the molten iron at the same time, so that the sprayed gas, the desulfurizer and the molten iron are fully mixed for desulfurization.

KR mechanical stirring desulfurization principle: the cross-shaped stirring head which is formed by pouring refractory materials is immersed into a molten pool of a foundry ladle for a certain depth and rotates after being baked, and when molten iron forms a vortex, a desulfurizing agent is put into the molten iron to be in full contact reaction with the molten iron, so that the aim of desulfurization is fulfilled.

KR mechanical stirring desulphurization is accepted by the majority of steel enterprises due to the advantages of superior dynamic conditions, low operation cost per ton of steel, relatively stable desulphurization effect, high efficiency and the like, and has the tendency of gradually replacing blowing desulphurization.

In the process of pushing the KR mechanical stirring method desulfurization process, the existing old blowing method desulfurization process is basically modified, and the original factory structure is unchanged; however, the original factory building structure is designed according to a blowing desulfurization process, and the problem of narrow effective space generally exists, so that how to successfully arrange KR process facilities in the factory building with the effective space less than 20 meters is a problem which needs to be solved urgently.

Disclosure of Invention

The invention provides an optimized and improved method for reducing the installation height of a KR desulfurization system, which can reduce the installation height of the conventional KR desulfurization facility by about 8.5 meters, so that the KR stirring desulfurization facility with high efficiency and low cost is successfully installed in a plant less than 20 meters, and the popularization and application of a KR mechanical stirring desulfurization process are facilitated.

In order to achieve the purpose, the invention adopts the following technical scheme:

an optimized and improved method for reducing the installation height of a KR desulfurization system comprises the following steps:

1) optimizing a stirring system; a stirring frame is provided with 3 layers of frames, a lifting trolley buffer is arranged at the top of the 3 layers of frames, and a platform at the top of the stirring frame, corresponding to the lifting trolley, is provided with a hole for a stirring motor to pass through;

2) optimizing a feeding system; the stirring system platform is not provided with a storage bin which is arranged outside the stirring system platform; a material blowing tank is arranged at the bottom of the storage bin, and materials are conveyed into a weighing bin in the stirring system platform in a pneumatic feeding mode; a discharge hole at the bottom of the weighing bin feeds materials into the hot metal ladle in a gravity feeding mode through a feeding telescopic chute;

3) optimizing a paddle changing vehicle system; the diameter of the wheels of the paddle changing vehicle is reduced to 300mm, so that the height of the working surface of the paddle changing vehicle is reduced;

4) optimizing a spare storage bin system; moving the standby bin to the outer side of the stirring system platform, conveying the materials in the standby bin to the stirring system platform through a belt conveyor, and adding the materials into the molten iron tank through a discharging chute;

the installation height of the KR desulfurization system after optimization does not exceed 20 meters.

Compared with the prior art, the invention has the beneficial effects that:

can make the mounting height of current KR desulfurization facility reduce about 8.5 meters to successfully install high-efficient, low-cost KR stirring desulfurization facility in being less than 20 meters's factory building, be favorable to KR mechanical stirring method desulfurization process's popularization and application.

Drawings

FIG. 1 is a highly schematic comparison of an optimized mixing apparatus and an original mixing apparatus in an embodiment of the present invention.

FIG. 2 is a height comparison graph of an optimized feeding system and an original feeding system in an embodiment of the invention.

Fig. 3 is a height comparison diagram of the optimized paddle changing vehicle and the original paddle changing vehicle in the embodiment of the invention.

Figure 4 is a comparison of an optimized backup bin system and a virgin backup bin system in an embodiment of the present invention.

In the figure: 1. stirring frame 2, lifting trolley 3, stirring motor 4, lifting trolley buffer 5, stirring frame top platform 6.50 vertical storage bin 7, material blowing tank 8, weighing bin 9, automobile feeding pipeline 10, original paddle-changing vehicle wheels 11, optimized paddle-changing vehicle wheels 12, original paddle-changing vehicle working table 13, optimized paddle-changing vehicle working table 14, standby bin 15, vibrating feeder 16, belt conveyor 17, original standby bin 18, hot-metal ladle 19.10t crane 20.450t crane

Detailed Description

The following further describes embodiments of the present invention with reference to the accompanying drawings:

an optimized and improved method for reducing the installation height of a KR desulfurization system comprises the following steps:

1) optimizing a stirring system; the stirring frame 1 is provided with 3 layers of frames, the lifting trolley buffer 4 is arranged at the top of the 3 rd layer of frames, and a platform 5 at the top of the stirring frame, corresponding to the lifting trolley 2, is provided with a hole for the stirring motor 3 to pass through;

2) optimizing a feeding system; the stirring system platform is not provided with a storage bin which is arranged outside the stirring system platform; a material injection tank 7 is arranged at the bottom of the storage bin, and materials are conveyed into a weighing bin 8 in the stirring system platform in a pneumatic feeding mode; a discharge hole at the bottom of the weighing bin 8 feeds materials into the hot metal ladle 18 through a feeding telescopic chute in a gravity feeding mode;

3) optimizing a paddle changing vehicle system; the diameter of the wheels of the paddle changing vehicle is reduced to 300mm, so that the height of the working surface of the paddle changing vehicle is reduced;

4) optimizing a spare storage bin system; moving the standby bin to the outer side of the stirring system platform, conveying the materials in the standby bin to the stirring system platform through a belt conveyor 16, and adding the materials into a molten iron tank 18 through a discharging chute;

the installation height of the KR desulfurization system does not exceed 20 meters.

The following examples are carried out on the premise of the technical scheme of the invention, and detailed embodiments and specific operation processes are given, but the scope of the invention is not limited to the following examples. The methods used in the following examples are conventional methods unless otherwise specified.