CN-224222316-U - High-pressure heat stewing device for compact free calcium oxide on surface of waste ladle brick

CN224222316UCN 224222316 UCN224222316 UCN 224222316UCN-224222316-U

Abstract

The utility model belongs to the technical field of removal of compact free calcium oxide on the surface of a waste steel ladle brick, and discloses a high-pressure heat stewing device for compact free calcium oxide on the surface of the waste steel ladle brick, wherein the high-pressure heat stewing device is fixedly arranged at a corresponding position on the right side of a telescopic mechanism bracket, a hopper is fixedly arranged at the upper part of a chain plate conveyor, and the chain plate conveyor is fixedly arranged at the bottom of a high-pressure heat stewing box; the booster pump is longitudinally and fixedly arranged at the left bottom of the telescopic mechanism bracket, the pressure sensor is fixedly arranged at the lower left position of the front H-shaped steam pipe of the high-pressure heat stewing box, the thermocouple is fixedly arranged at the left position of the pressure sensor, and the explosion-proof valve is fixedly arranged at the right position of the pressure sensor. The method has the beneficial effects that the free calcium oxide on the surface of the waste ladle brick is digested into calcium hydroxide, the digestion of the free calcium oxide on the surface is up to 95%, and meanwhile, the expansion rate of the crushed ladle brick refractory raw material is reduced to 1.5%.

Inventors

JIA BO
BI ZHENYONG
SHAO SHUYING
GUO BIN
YANG JIAN
PENG XIAOPIN

Assignees

河南海格迩新材料有限公司

Dates

Publication Date: 20260512
Application Date: 20250514

Claims (9)

1. A high-pressure heat stewing device for compact free calcium oxide on the surface of a waste steel ladle brick comprises a telescopic mechanism bracket, a bottom plate and an upper plate, wherein the telescopic mechanism bracket is of a square structure, and a vertical plate is vertically arranged at the upper part of the left side of the telescopic mechanism bracket; the bottom plate is transversely and fixedly arranged at the bottom of the right side of the telescopic mechanism support vertical plate, and the upper plate is fixedly arranged at the upper part of the bottom plate; the telescopic mechanism is divided into a lower telescopic mechanism and an upper telescopic mechanism, wherein the lower telescopic mechanism is fixedly arranged at the upper middle position of the bottom plate, and the upper telescopic mechanism is fixedly arranged at the upper middle position of the upper plate; the high-pressure heat stewing device is characterized by being fixedly arranged at a right corresponding position of a telescopic mechanism bracket, comprising a supporting plate, wherein the supporting plate is fixedly arranged at the middle position of the front side and the rear side of a high-pressure heat stewing box, the high-pressure heat stewing box is cuboid with an upper part and a lower part which are open, the high-pressure heat stewing box generates steam by utilizing waste heat and carries out high-pressure stewing heat digestion treatment on free calcium oxide on the surface of a waste ladle brick, an upper cover is slidably arranged at the upper part of the high-pressure heat stewing box, a lower cover is slidably arranged at the bottom of the high-pressure heat stewing box, a sliding body is symmetrically and fixedly arranged at the front side and the rear side of the upper cover and the lower cover, four raised strips are arranged, one group is symmetrically arranged at the front side and the rear side of the upper part of the high-pressure heat stewing box, the other group is fixedly arranged at the front side and the rear side of the lower part of the high-pressure heat stewing box, an H-shaped steam pipe penetrates through the upper part of the supporting plate and is fixedly arranged at the front side and the rear side of the left side of the high-pressure stewing box, the steam pipe is fixedly arranged at the left side of the high-pressure stewing box, the left side of the high-pressure stewing box is fixedly arranged at the left side of the high-pressure stewing box, the left side pipe is fixedly arranged at the left side of the left side pipe, the left side pipe is fixedly arranged at the left side of the left side, the left side pipe is fixedly arranged at the left side, and the left side is left side, and the left side is left, and the left, and right, and the left, and is at the left, and right, and the left and the left and right, and the left and the left and the right, and the and the, the water injection pipe is fixedly arranged at the upper part of the rear side surface of the right end of the high-pressure heat stewing box, the hopper is fixedly arranged at the upper part of the chain plate conveyor, the chain plate conveyor is fixedly arranged at the bottom position of the high-pressure heat stewing box, the booster pump is longitudinally and fixedly arranged at the bottom position of the left side of the telescopic mechanism bracket, the pressure sensor is fixedly arranged at the lower position, close to the left side, of the H-shaped steam pipe at the front side of the high-pressure heat stewing box, the thermocouple is fixedly arranged at the left side of the pressure sensor, and the explosion-proof valve is fixedly arranged at the right side of the pressure sensor.
2. The high-pressure heat stewing device for compact free calcium oxide on the surface of a waste steel ladle brick is characterized in that the telescopic mechanism comprises supporting blocks, the supporting blocks are symmetrically arranged at the middle position of the upper part of a bottom plate or an upper plate in a left-right mode, a hydraulic push rod is fixedly arranged on the supporting blocks which are symmetrically arranged in the left-right mode, a U-shaped push plate is fixedly arranged at the right end of a telescopic rod of the hydraulic push rod, the longitudinal center of the U-shaped push plate is fixedly connected with the right end of the telescopic rod of the hydraulic push rod, the push rods are symmetrically arranged at the two sides of the U-shaped push plate in a front-back mode, and the hydraulic push rod is fixedly connected with a pump valve of a hydraulic station.
3. The high-pressure heat stewing device for compact free calcium oxide on the surface of the waste steel ladle brick as claimed in claim 1, wherein the supporting plate comprises a supporting plate body, the supporting plate body is L-shaped, strip-shaped heat dissipation holes are uniformly formed in the side face of the supporting plate body, and the strip-shaped heat dissipation holes are used for dissipating heat generated by the high-pressure heat stewing treatment of the free calcium oxide on the surface of the waste steel ladle brick.
4. The high-pressure heat stewing device for compact free calcium oxide on the surface of a waste steel ladle brick is characterized in that the high-pressure heat stewing box comprises a V-shaped partition plate, the V-shaped partition plate is arranged in the high-pressure heat stewing box and is close to the right, a sealing plate is fixedly arranged at the bottom and the upper part of the right side of the V-shaped partition plate respectively, the right end of the sealing plate is fixed with the inner wall of the right side of the high-pressure heat stewing box, the V-shaped partition plate and the sealing plate are of an integrated forming structure, the left side of the V-shaped partition plate is a heat stewing box, the right side of the V-shaped partition plate is a steam box, and the steam box is used for heating water to form steam by preheating in a tunnel kiln.
5. The high-pressure heat stewing device for compact free calcium oxide on the surface of a waste steel ladle brick as claimed in claim 1 is characterized in that the sliding body comprises a sliding body, the sliding body is in a strip shape, a sliding groove is formed in the lower part of the inner side surface of the sliding body, the sliding groove penetrates through the sliding body, and the convex strips are installed in the sliding groove in a sliding fit mode.
6. The high-pressure heat stewing device for compacting free calcium oxide on the surface of waste ladle bricks according to claim 2, wherein the right end of the push rod and the upper part or the lower part of the sliding body are horizontally arranged left and right.
7. The high-pressure heat stewing device for compact free calcium oxide on the surface of the waste steel ladle brick as claimed in claim 1, wherein the H-shaped steam pipe comprises an H-shaped steam pipe body, steam short pipes are uniformly arranged on the inner sides of upper and lower transverse pipes of the H-shaped steam pipe body, the steam short pipes are communicated with the inside of the high-pressure heat stewing box, and the steam short pipes are communicated with the H-shaped steam pipe body.
8. The high-pressure heat stewing device for compact free calcium oxide on the surface of a waste ladle brick as claimed in claim 1 is characterized in that the steam pipe flange is connected with the output end of a booster pump through a steam pipe, the input end of the booster pump is fixedly communicated with a steam discharge pipe, a waste heat introducing pipe is connected with a waste heat eduction pipe of a tunnel kiln through a waste heat conveying pipeline, and a water injection pipe is fixedly connected with an output port of a water injection pump through a water injection pipe.
9. The high-pressure heat stewing device for compact free calcium oxide on the surface of waste steel ladle bricks according to claim 1, wherein the hopper is large in upper opening, small in lower opening and open at the right end, the opening at the lower part of the hopper is larger than the width of a chain plate of the chain plate conveyor, and the length of the hopper is larger than the length of a high-pressure heat stewing box.

Description

High-pressure heat stewing device for compact free calcium oxide on surface of waste ladle brick Technical Field The utility model belongs to the technical field of digestion of compact free calcium oxide on the surface of waste ladle bricks, and particularly relates to a high-pressure heat stewing device for compact free calcium oxide on the surface of waste ladle bricks. Background The waste ladle bricks are the refractory bricks detached from the inner surface of the overhauled ladle. Because the ladle is a tool for transferring molten steel, a compact mineral phase layer is formed by high-temperature sintering in a long-term high-temperature environment, and mainly comprises solid crystal phases such as solid solution formed by tricalcium silicate (C 3 S), dicalcium silicate (C 2 S), feO, mgO, mnO and the like, wherein the free calcium oxide (f-CaO) layer has slow hydration reaction for years at normal temperature, and the volume expansion rate is up to 98% ‌, if the compact free calcium oxide layer is not digested, the mineral phase layer of the waste ladle bricks cannot be removed and crushed, so that the processing of the waste ladle brick refractory raw materials cannot be performed, and the waste ladle bricks cannot be recycled. In the waste ladle brick refractory raw materials, the volume expansion rate of free calcium oxide is higher, and the refractory bricks pressed by the waste ladle brick refractory raw materials are easy to crack and even pulverize in the working condition of the refractory bricks due to the existence of the free calcium oxide. The free calcium oxide is a harmful substance in the waste ladle brick refractory raw material, so that the compact free calcium oxide on the surface of the waste ladle brick is required to be digested to meet the process requirements of the refractory raw material. In the prior art, the digestion treatment of free calcium oxide on the surface of the waste ladle brick has always puzzled the technical problem of the industry, and the adopted mode at present is to spray the waste ladle brick surface by using high temperature water, so that the digestion treatment of the free calcium oxide on the surface of the waste ladle brick can be accelerated, but the digestion treatment speed is not ideal enough, and the process requirement of the waste ladle brick refractory raw material cannot be met. The inventor develops a high-pressure heat stewing device for compact free calcium oxide on the surface of the waste ladle brick based on the technical defects in the prior art, and the device can rapidly digest and treat the compact free calcium oxide on the surface of the waste ladle brick. Disclosure of utility model The utility model aims to solve the technical problems and provides a high-pressure heat stewing device for compact free calcium oxide on the surface of waste ladle bricks, which has scientific and reasonable structural design and simple structure, utilizes the principle of high-pressure heat stewing, utilizes the waste heat of a tunnel kiln to be introduced into a steam box to generate high-temperature steam, and then pressurizing steam in the steam box by utilizing a booster pump and inputting the steam into a thermal stewing box, carrying out high-pressure thermal stewing digestion treatment on compact free calcium oxide on the surface of the waste ladle brick, and carrying out digestion reaction on the free calcium oxide on the surface of the waste ladle brick to obtain calcium hydroxide, so that the expansion rate of the refractory raw material of the waste ladle brick is reduced. The utility model adopts the technical scheme that the high-pressure heat stewing device for compact free calcium oxide on the surface of waste ladle bricks comprises a telescopic mechanism bracket, a bottom plate and an upper plate, wherein the telescopic mechanism bracket is of a square structure, and a vertical plate is vertically arranged at the upper part of the left side of the telescopic mechanism bracket; the bottom plate is transversely and fixedly arranged at the bottom of the right side of the telescopic mechanism support vertical plate, and the upper plate is fixedly arranged at the upper part of the bottom plate; the telescopic mechanism is divided into a lower telescopic mechanism and an upper telescopic mechanism, wherein the lower telescopic mechanism is fixedly arranged at the upper middle position of the bottom plate, and the upper telescopic mechanism is fixedly arranged at the upper middle position of the upper plate; the high-pressure heat stewing device is fixedly arranged at the right corresponding position of the telescopic mechanism bracket and comprises a supporting plate, the supporting plate is fixedly arranged at the middle position of the front side and the rear side of the high-pressure heat stewing box, the high-pressure heat stewing box is cuboid with an upper part and a lower part which are open, the high-pressure heat stewing box gene