Flue gas blocking device of side-blown smelting furnace
By designing a flue gas blocking device for nickel-side blown smelting furnace, the problem of the flue gas of nickel-side blown smelting furnace cannot be discharged normally by using a rectangular composite frame, water-cooled coil pipe and high-temperature resistant steel fiber material, the problem of the flue gas of nickel-side blown smelting furnace cannot be discharged normally, and the problem of the flue gas of nickel-side blown smelting furnace cannot be discharged normally is achieved. Rapid blocking and production continuity reduce failure rate.
Patent Information
- Application Number
- CN202420814506.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-19
- Publication Date
- 2024-12-10
- Estimated Expiration
- 2034-04-19
AI Technical Summary
During the nickel-side blown smelting furnace production process, if the waste heat boiler or dust collection equipment in the rear section fails, the smelting flue gas cannot be discharged normally, resulting in serious constraints in the production timing and maintenance efficiency.
Design a side blown melting furnace flue gas blocking device, including a rectangular composite frame, water-cooled coil pipe and high-temperature resistant steel fiber castable, which is suspended at the connection between the furnace smoke outlet and the boiler through a suspended ring, and uses water-cooled coil pipe and steel The fiber material cools down and is sealed through the steel plate to achieve rapid blocking of flue gas.
Effectively block smelting flue gas within 5 minutes, ensure production continuity, and provide maintenance conditions for the rear-end equipment and facilities, reduce the failure rate, and maintain normal production timing.
Smart Images
Figure CN222143790U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of metallurgical devices, and in particular relates to a smoke blocking device for a side-blowing smelting furnace. Background Art
[0002] The nickel side-blowing smelting furnace mainly processes nickel concentrate with low grade and high magnesium oxide content. The smelting flue gas enters the waste heat boiler through the flue gas outlet through the furnace ascending flue, and the flue gas temperature at the flue gas outlet is above 1200℃. During the production process, if the waste heat boiler or the rear dust collection equipment fails, the side-blowing smelting furnace must be kept warm or shut down. The smelting flue gas cannot be discharged normally in a short period of time, which seriously restricts the production sequence and maintenance efficiency. Utility Model Content
[0003] The utility model provides a side-blowing smelting furnace smoke blocking device, which is used to block the smoke when a waste heat boiler or a rear-stage dust collecting device fails.
[0004] To this end, the utility model adopts the following technical solutions:
[0005] A side-blowing smelting furnace smoke blocking device comprises a rectangular frame-shaped composite frame, the composite frame is in the shape of a rectangular plate, a water cooling coil is arranged in the inner cavity of the composite frame, a water inlet and a water outlet of the water cooling coil are both located at the upper part of the composite frame, and a high-temperature resistant steel fiber casting material is cast on the front and back of the composite frame;
[0006] At least two hanging rings are arranged on the top of the composite frame, and the composite frame is suspended above the connection between the smoke outlet of the furnace body and the boiler through the hanging rings.
[0007] Furthermore, independent water cooling coils are provided on the left and right sides of the inner cavity of the composite frame.
[0008] Furthermore, the composite frame is sealed by welding steel plates around it.
[0009] The beneficial effects of the utility model are:
[0010] The utility model can fully meet the conditions for switching flue gas when the dust collection system of the side-blowing smelting furnace fails, is easy to operate, and has a failure rate of basically 0. When the waste heat boiler or the rear dust collection equipment fails, the smelting flue gas can be blocked within 5 minutes and all enter the environmental protection system, providing maintenance conditions for the rear equipment and facilities to maintain normal production sequence. BRIEF DESCRIPTION OF THE DRAWINGS
[0011] Figure 1 It is a structural schematic diagram of the utility model;
[0012] Figure 2 It is a schematic diagram of the water cooling coil on the left side of the utility model;
[0013] In the figure: 1-composite frame, 2-left water cooling coil, 3-right water cooling coil, 4-water inlet, 5-water outlet, 6-hanging ring. DETAILED DESCRIPTION
[0014] The utility model is further described below in conjunction with the accompanying drawings and specific embodiments:
[0015] like Figure 1 and 2 As shown, a side-blown smelting furnace smoke blocking device includes a rectangular frame-shaped composite frame 1, the composite frame 1 is in the shape of a rectangular plate, a water-cooling coil is arranged in the inner cavity of the composite frame 1, the water inlet 4 and the water outlet 5 of the water-cooling coil are both located at the upper part of the composite frame 1, and independent water-cooling coils are respectively arranged on the left and right sides of the inner cavity of the composite frame 1, namely: left water-cooling coil 2 and right water-cooling coil 3, and high-temperature resistant steel fiber castables are cast on the front and back of the composite frame 1. The composite frame is sealed with welded steel plates all around. The water-cooling coil is used to reduce the temperature of the composite frame to prevent deformation of the composite frame 1 due to high temperature; the high-temperature resistant steel fiber castable further,
[0016] At least two lifting rings 6 are arranged on the top of the composite frame, and the composite frame is suspended above the connection between the furnace smoke outlet and the boiler by the lifting rings. The electric hoist is used to control the lifting of the composite frame. When the production is normal, the device is suspended above the connection between the furnace smoke outlet and the boiler. When the rear dust collection facilities fail, the device falls to the connection between the smoke outlet and the boiler to block the smoke.
Claims
1. A side-blown smelting furnace smoke blocking device, characterized in that: It includes a rectangular frame-shaped composite frame, which is in the shape of a rectangular plate, a water cooling coil is arranged in the inner cavity of the composite frame, a water inlet and a water outlet of the water cooling coil are both located at the upper part of the composite frame, and a high-temperature resistant steel fiber casting material is cast on the front and back of the composite frame; At least two hanging rings are arranged on the top of the composite frame, and the composite frame is suspended above the connection between the smoke outlet of the furnace body and the boiler through the hanging rings.
2. The side-blown smelting furnace smoke blocking device according to claim 1, characterized in that: Independent water cooling coils are respectively arranged on the left and right sides of the inner cavity of the composite frame.
3. The side-blown smelting furnace smoke blocking device according to claim 1, characterized in that: The composite frame is sealed by welding steel plates around it.