Metallurgical furnace construction refers to the construction of metallurgical industrial furnaces. The building quality of metallurgical furnace directly affects the service life and thermal process of the furnace, thus affecting the output and quality of the product. Furnace building materials include refractory materials, thermal insulation materials, general building materials and steel structural materials. Hit the furnace material manufacturers for you to share

The basic requirements of furnace construction are: accurate masonry size, staggered masonry, brick joint size should meet the requirements, expansion joint masonry quality, masonry surface pointing, working face flat, arch masonry quality. The metallurgical furnace needs to be dried and ovened before use, so that the water evaporates and reaches a certain temperature before it can be produced.

       1, crucible refractory material

Crucible refractory confirmation: to purchase acidic furnace lining materials from Hubei Anaijie Furnace Lining Materials Co., LTD., it is necessary to confirm the product name and model of the material supplier.

Oral equipment inspection;

Before building the furnace, the electric furnace equipment should be tested for water and pressure, trial operation, and the furnace body tilting inspection; The newly applied mud should be dried and baked permeable, and the furnace can be laid and built with asbestos cloth or mica paper after confirmation. (If there is an ejecting mechanism of the equipment - must lay mica paper to facilitate the dismantling of the furnace)

       2. Install alarm system.

3. Tie the bottom of the furnace.

a.. Layer the 3-ton bag and then flatten it. Use the wind to shake from the outside to the inside 2-3 times, taking 25-30 minutes, the flat hammer requires the second hammer pressure... 1/3 of the hammer, not missing the hammer. After ramming, scrape the surface loosely with a fork for 5-10mm to facilitate the interlocking between layers and prevent delamination.

b Add 2 tons of bags to the second layer, same method as above.

c Use a trowel to scrape off the excess height of the lining material, and use a level and wooden board to level the bottom of the furnace.

The above picture is the blasting charge produced by Hubei Anaijie

       4. Place the crucible mold

a Crucible mold error: 5m. The circular shape of the crucible die will cause the wall thickness of the crucible to be uneven, and the crucible die must be re-trimmed to make it conform to the requirements of the drawing.

b The diameter of the crucible mold exhaust hole is 3-6mm, and the spacing is 150 200mm; If the mold is rusted, it can be used after grinding with sandpaper.

c When placing the crucible mold, pay attention to the thickness of the crucible wall - align with the coil, the weld is left in the back half, and the front side is thick.

d Fix the crucible mold with three wooden wedges.

     5. Fill the crucible wall

a Be sure to loosen the material that is in contact with the crucible wall at the bottom by 5-10mm!

b Add refractory materials, must carefully check each layer, be careful not to let any packaging debris and other debris mixed into the lining material!

c If the lining material enters between the laying materials, it must be completely removed. If it cannot be removed, all lining materials must be removed.

d The crucible wall layer is fed 12cm and then flat. Then use the manual fork 1-2 times, taking 5-10 minutes, and then use the air pick to vibrate with a flat hammer along the principle of uniform order of the crucible and the furnace wall, and the flat hammer requires the second hammer to press the 1/3 of the hammer, without missing the hammer. After ramming, scrape the surface loosely with a fork for 5-10mm to facilitate the interlocking between layers and prevent delamination.

e From the second floor to the top of the furnace, repeat the above operation.

f Knot to 1/3 height to remove wedge blocks.

h The lining must be finished at one time, it is strictly prohibited to stop beating, because this material has strong moisture absorption, coupled with large dust and debris in the casting workshop, which affects the life of the lining.

6, the upper 30cm of the grate is sealed with plastic, the charge and the plastic junction of a little clean tap water is conducive to bonding with each other, and the knot is divided into two layers with the air pick.

7, the furnace nozzle with plastic knot forming.

8, with a diameter of 2-3mm steel needle spacing 150mm-200mm evenly and orderly to tie the plastic vent, which is conducive to the moisture removal of the furnace lining.

The above information is provided by Hubei Anaijie furnace charge manufacturers! Welcome to telephone consultation!