Brick of adiabatic heat preservation of B1, B2, B3, B4, B5, B6, B7

The use of fireproof and adiabatic brick should consider two aspects:
(1) is used on hot side directly
(2) is used in the reverse side that heats up fireproof content. When choosing a brick, the temperature inside furnace and temperature of furnace wall inside are most important.
Next, use on hot side directly when, the atmosphere inside furnace, warm up, cooling rate, whether to have dirt slaggy reach velocity of flow burning gas to wait to also want a consideration.

When heating surface is used

When overleaf is used

State use temperature has the following two kinds:
(1) does not exceed remaining Jin to change lead the temperature of 2% ;
(2) does not heat again more than shrinkage the temperature of 0.5% ;
Selection method is as follows:
Choice mark has temperature (when the firebrick of 1) , want to choose
Choose is safer than designing temperature 200 ℃ - the breed of 300 ℃ .
Choice mark has temperature (when the firebrick of 2) , want to choose
Choose is safer than designing temperature 100 ℃ - the breed of 150 ℃ .

Selection method is as follows:
Choice mark has temperature (when the firebrick of 1) , computation
Thermal drop is small, computative the temperature of its interface, choice
Compare the variety that 100 ℃ control interface temperature safety.
Choice mark has temperature (when the firebrick of 2) , plan
Consider thermal drop low, computative its interface temperature, choice
Install whole breed a little than interface temperature.

 Save the sources of energy
   Fireproof the brick that break heat is poriferous qualitative, 80% what air hole takes dimension. Accordingly, our bricky weight does not exceed the 25~60% of firebrick. The brick has countless small air hole, outside breaking ability of hot heat preservation outstandingly to be able to prevent quantity of heat to pour out of furnace so, remove heat preservation to save the action of the sources of energy thereby.

 Small amount
   Fireproof the brick that break heat is compared at general firebrick phase, weight wants light, fireplace is able to attenuate, can increase the volume inside furnace, the size of OK also and contractible furnace, in addition, still can reduce the use amount of auxiliary rolled steel, the shift of furnace is relatively some easier also.

 Improve productivity
  Heat preservation brick, harbour quantity of heat is very small, with a few the temperature that fuel can reach set inside short time, shortened so arrive from ignition the time of the operation, of furnace run also be able to accelerate, output also increased.

 Improve work environment
  Hot conductivity of heat preservation brick is very small, the quantity of heat that sends out from furnace wall so is very few also, in work environment also got ameliorative all round furnace.

Below hydric condition, metal- - condition and the scope of application of all sorts of fireproof and adiabatic bricks balance between metallic oxide:
   1. It is with the dew point of established atmosphere fiducial, the reductive and highest concessional temperature of the oxide that can prevent an object is called to balance temperature.
   2. It is with the dew point of established atmosphere fiducial, the lowest that can avoid the problem with reductive oxidation is concessional dew point is called corresponding dew point.
   3. Be in on the right side of curve below the condition of the corresponding dew point with underside and temperature, reductive oxide, generate vapor.
   4. Of curve left and below the condition of the corresponding dew point of upside and temperature, won't reductive oxide.
   5. If that dew point of the balances curve wrong upper part ferric oxide is the commonnest correspondence,dew point is mixed the word of temperature, also making clear is what cannot prevent ferric oxide quite is reductive.

Platoon date

B1

B2

B4

B5

B6

B7

JIS classification

900-0.70-0.26

1000-0.70-0.28

1200-0.80-0.37

1300-0.80-0.39

1400-0.90-0.42

1500-1.00-0.50

Norms

Be in (℃ ) when the test, permanent and linear change does not exceed ±2 ％

900

1000

1200

1300

1400

1500

Bulk density

0.7 ≧

0.7 ≧

0.8 ≧

0.8 ≧

0.9 ≧

1 ≧

When 600 ℃Coefficient of thermal conductivity[W / M·K]

0.26 ≧

0.28 ≧

0.37 ≧

0.39 ≧

0.42 ≧

0.5 ≧

Test result

Bulk density

0.65

0.65

0.78

0.78

0.86

0.75

Cold pressure
Intensity [MPa]

3

3.2

1.5

1.7

2.4

4

The coefficient of thermal conductivity when 600 ℃ [W / M·K]

0.22

0.26

0.33

0.33

0.37

0.41

Be in () the ％ of permanent and linear change that ℃ X12hr is in

- 0.6

- 0.8

- 0.3

- 0.25

- 1

- 0.9

- 900

- 1000

- 1200

- 1300

- 1400

- 1500