阅读说明：本技术 一种高炉炉缸碳砖残厚判断方法 (A kind of residual thick judgment method of blast furnace crucibe carbon brick ) 是由 陈生利 周凌云 匡洪锋 刘立广 王振 于美晨 张涛颖 何春来 黎明杰 俞荣 于 2018-07-18 设计创作，主要内容包括：本发明涉及一种高炉炉缸碳砖残厚判断方法,包括如下步骤：a)判断条件：碳溶解温度为1150℃,碳砖原厚度为d；b)根据炉缸碳砖所插热电偶,将热电偶温度分布设为T<Sub>1</Sub>、T<Sub>2</Sub>、T<Sub>3</Sub>、T<Sub>4</Sub>,温度点T<Sub>1</Sub>靠近炉皮,温度值最小,温度点T<Sub>4</Sub>靠近炉缸,温度值最大；c)确定碳砖热电偶插入碳砖深度,T<Sub>1</Sub>插入深度h<Sub>1</Sub>、T<Sub>2</Sub>插入深度h<Sub>2</Sub>、T<Sub>3</Sub>插入深度h<Sub>3</Sub>、T<Sub>4</Sub>插入深度h<Sub>4</Sub>；d)理论计算；e)碳砖残厚d<Sub>1</Sub>为：L<Sub>12</Sub>、L<Sub>13</Sub>、L<Sub>14</Sub>、L<Sub>23</Sub>、L<Sub>24</Sub>、L<Sub>34</Sub>中最小值,碳砖被侵蚀厚度=碳砖原厚度d-d<Sub>1</Sub>。它能通过对炉缸碳砖被高温高压铁水冲刷侵蚀后的残厚进行理论计算,可以得到碳砖被侵蚀的程度,从而指导高炉操作者做出有利于炉缸安全的措施,降低高炉炉缸烧穿事故的风险。(The present invention relates to a kind of residual thick judgment methods of blast furnace crucibe carbon brick, and include the following steps: a) Rule of judgment: carbon dissolution temperature is 1150 DEG C, and carbon brick original thickness is d；B) according to the plug in thermocouple of cupola well carbon brick institute, electric thermo-couple temperature distribution is set as T 1 、T 2 、T 3 、T 4 , temperature spot T 1 Close to furnace skin, temperature value is minimum, temperature spot T 4 Close to cupola well, temperature value is maximum；C) determine that carbon brick thermocouple is inserted into carbon brick depth, T 1 Insertion depth h 1 、T 2 Insertion depth h 2 、T 3 Insertion depth h 3 、T 4 Insertion depth h 4 ；D) theoretical calculation；E) the residual thickness d of carbon brick 1 Are as follows: L 12 、L 13 、L 14 、L 23 、L 24 、L 34 Middle minimum value, carbon brick are etched thickness=carbon brick original thickness d-d 1 .It can be by washing away the residual thick progress theoretical calculation after corroding by high temperature and pressure molten iron to cupola well carbon brick, and the degree that available carbon brick is etched, to instruct blast furnace operating, person makes the measure for being conducive to cupola well safety, reduces the risk that blast furnace crucibe burns accident.)

1. a kind of residual thick judgment method of blast furnace crucibe carbon brick, is characterized in that including the following steps:

A) Rule of judgment: carbon dissolution temperature is 1150 DEG C, and carbon brick original thickness is d；

B) according to the plug in thermocouple of cupola well carbon brick institute, electric thermo-couple temperature distribution is set as T₁、T₂、T₃、T₄, temperature spot T₁Close furnace skin, Temperature value is minimum, temperature spot T₄Close to cupola well, temperature value is maximum；

C) determine that carbon brick thermocouple is inserted into carbon brick depth, T₁Insertion depth h₁、T₂Insertion depth h₂、T₃Insertion depth h₃、T₄Insertion is deep Spend h₄；

D) theoretical calculation: with carbon brick thermocouple T₁、T₂Temperature value calculates, carbon brick residual thickness L₁₂=(1150-T₂)/(T₂-T₁) * (h₂- h₁)+h₂；With carbon brick thermocouple T₁、T₃It calculates, carbon brick residual thickness L₁₃=(1150-T₃)/(T₃-T₁) * (h₃-h₁)+h₃；With carbon brick heat Galvanic couple T₁、T₄It calculates, carbon brick residual thickness L₁₄=(1150-T₄)/(T₄-T₁) * (h₄-h₁)+h₄；With carbon brick thermocouple T₂、T₃It calculates, The residual thickness L of carbon brick₂₃=(1150-T₃)/(T₃-T₂) * (h₃-h₂)+h₃；With carbon brick thermocouple T₂、T₄It calculates, carbon brick residual thickness L₂₄= (1150-T₄)/(T₄-T₂) * (h₄-h₂)+h₄；With carbon brick thermocouple T₃、T₄It calculates, carbon brick residual thickness L₃₄=(1150-T₄)/(T₄- T₃) * (h₄-h₃)+h₄；

E) the residual thickness d of carbon brick₁Are as follows: L₁₂、L₁₃、L₁₄、L₂₃、L₂₄、L₃₄Middle minimum value, carbon brick are etched thickness=carbon brick original thickness d-d₁。

2. the residual thick judgment method of blast furnace crucibe carbon brick as described in claim 1, it is characterised in that: in the step b, by identical Number of plies cupola well carbon brick electric thermo-couple temperature difference maximum calculates, and taking calculated minimum is the residual thick value of carbon brick.

Technical field

The invention belongs to technical field of blast furnace ironmaking, are related to a kind of residual thick judgment method of blast furnace crucibe carbon brick.

Background technique

Blast furnace crucibe is high temperature slag iron memory block under blast furnace process state.The masonry construction of cupola well from outside to inside generally wraps Furnace skin is included, the bed of material, cooling wall is smash, smashes the bed of material, carbon brick, wherein carbon brick takes layering to build.Carbon brick layer belongs to the innermost layer of cupola well, Cupola well carbon brick is directly contacted with the high temperature slag iron generated is smelted in furnace.In cupola well carbon brick region, 2-4 would generally be arranged in every block of carbon brick Thermocouple, for measuring carbon brick temperature.For the pressure that cupola well carbon brick is born generally in 200KPa or more, the temperature born is general At 1450 DEG C or more.

Since blast furnace is in continuous production state, the high temperature slag iron in cupola well needs to be discharged from the iron mouth in cupola well region, from And realize blast furnace quantity-produced purpose.High temperature and pressure slag iron in blast furnace crucibe is discharged from iron mouth, inevitable to be formed in cupola well Circulation, high temperature and pressure flowing slag iron to cupola well wash away erosion be it is unavoidable, especially must to the erosion of cupola well carbon brick So exist.

In the management of blast furnace safety longevity, blast furnace operating person is to the erosion degree of cupola well carbon brick without more accurately judgement side Method judges carbon brick erosion condition by cupola well carbon brick electric thermo-couple temperature and cupola well region cooling wall water temperature difference entirely.Especially portion Divide blast furnace excessively strengthening smelting, the safety of blast furnace crucibe is had ignored, after being washed away erosion by high temperature and pressure slag iron to cupola well carbon brick Carbon brick it is residual it is thick lack judgment basis, cause blast furnace crucibe to burn the generation of accident, blast furnace crucibe is seriously threatened safely.Such as What accurately grasps the case where cupola well carbon brick weathers by the theoretical foundation of science, thus the residual thickness of accurate judgement cupola well carbon brick, It is blast furnace worker problem in the urgent need to address.

Summary of the invention

In order to overcome the disadvantages mentioned above of the prior art, the present invention provides a kind of blast furnace crucibe carbon brick residual thick judgment method, it It can be by washing away the residual thick progress theoretical calculation after corroding by high temperature and pressure molten iron to cupola well carbon brick, available carbon brick is etched Degree reduce the risk that blast furnace crucibe burns accident so that the person that instructs blast furnace operating makes the measure for being conducive to cupola well safety, The theoretical basis of science is improved for blast furnace safety longevity.

The technical solution adopted by the present invention to solve the technical problems is: a kind of residual thick judgment method of blast furnace crucibe carbon brick, Include the following steps:

A) Rule of judgment: carbon dissolution temperature is 1150 DEG C, and carbon brick original thickness is d；

B) according to the plug in thermocouple of cupola well carbon brick institute, electric thermo-couple temperature distribution is set as T₁、T₂、T₃、T₄, temperature spot T₁Close furnace skin, Temperature value is minimum, temperature spot T₄Close to cupola well, temperature value is maximum；

C) determine that carbon brick thermocouple is inserted into carbon brick depth, T₁Insertion depth h₁、T₂Insertion depth h₂、T₃Insertion depth h₃、T₄Insertion Depth h₄；

D) theoretical calculation: with carbon brick thermocouple T₁、T₂Temperature value calculates, carbon brick residual thickness L₁₂=(1150-T₂)/(T₂-T₁) * (h₂- h₁)+h₂；With carbon brick thermocouple T₁、T₃It calculates, carbon brick residual thickness L₁₃=(1150-T₃)/(T₃-T₁) * (h₃-h₁)+h₃；With carbon brick heat Galvanic couple T₁、T₄It calculates, carbon brick residual thickness L₁₄=(1150-T₄)/(T₄-T₁) * (h₄-h₁)+h₄；With carbon brick thermocouple T₂、T₃It calculates, The residual thickness L of carbon brick₂₃=(1150-T₃)/(T₃-T₂) * (h₃-h₂)+h₃；With carbon brick thermocouple T₂、T₄It calculates, carbon brick residual thickness L₂₄= (1150-T₄)/(T₄-T₂) * (h₄-h₂)+h₄；With carbon brick thermocouple T₃、T₄It calculates, carbon brick residual thickness L₃₄=(1150-T₄)/(T₄- T₃) * (h₄-h₃)+h₄；

E) the residual thickness d of carbon brick₁Are as follows: L₁₂、L₁₃、L₁₄、L₂₃、L₂₄、L₃₄Middle minimum value, carbon brick are etched thickness=carbon brick original thickness d-d₁。

Preferably, being calculated by identical number of plies cupola well carbon brick electric thermo-couple temperature difference maximum in the step b, taking meter Calculating minimum value is the residual thick value of carbon brick.

The positive effect of the present invention is: by being managed by the residual thickness that high temperature and pressure molten iron washes away after corroding cupola well carbon brick By calculating, the degree that available carbon brick is etched, to instruct blast furnace operating, person makes the measure for being conducive to cupola well safety, drop Low blast furnace crucibe burns the risk of accident, and the theoretical basis of science is improved for blast furnace safety longevity.

Specific embodiment

Below with reference to embodiment, the present invention is further described.

A kind of residual thick judgment method of blast furnace crucibe carbon brick, includes the following steps:

A) Rule of judgment: carbon dissolution temperature is 1150 DEG C, and carbon brick original thickness is d；

B) according to the plug in thermocouple of cupola well carbon brick institute, electric thermo-couple temperature distribution is set as T₁、T₂、T₃、T₄, temperature spot T₁Close furnace skin, Temperature value is minimum, temperature spot T₄Close to cupola well, temperature value is maximum；

C) determine that carbon brick thermocouple is inserted into carbon brick depth, T₁Insertion depth h₁、T₂Insertion depth h₂、T₃Insertion depth h₃、T₄Insertion Depth h₄；

D) theoretical calculation: with carbon brick thermocouple T₁、T₂Temperature value calculates, carbon brick residual thickness L₁₂=(1150-T₂)/(T₂-T₁) * (h₂- h₁)+h₂；With carbon brick thermocouple T₁、T₃It calculates, carbon brick residual thickness L₁₃=(1150-T₃)/(T₃-T₁) * (h₃-h₁)+h₃；With carbon brick heat Galvanic couple T₁、T₄It calculates, carbon brick residual thickness L₁₄=(1150-T₄)/(T₄-T₁) * (h₄-h₁)+h₄；With carbon brick thermocouple T₂、T₃It calculates, The residual thickness L of carbon brick₂₃=(1150-T₃)/(T₃-T₂) * (h₃-h₂)+h₃；With carbon brick thermocouple T₂、T₄It calculates, carbon brick residual thickness L₂₄= (1150-T₄)/(T₄-T₂) * (h₄-h₂)+h₄；With carbon brick thermocouple T₃、T₄It calculates, carbon brick residual thickness L₃₄=(1150-T₄)/(T₄- T₃) * (h₄-h₃)+h₄；

E) the residual thickness d of carbon brick₁Are as follows: L₁₂、L₁₃、L₁₄、L₂₃、L₂₄、L₃₄Middle minimum value, carbon brick are etched thickness=carbon brick original thickness d-d₁。

Preferably, being calculated by identical number of plies cupola well carbon brick electric thermo-couple temperature difference maximum in the step b, taking meter Calculating minimum value is the residual thick value of carbon brick.