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Dri Sponge Iron Rotary Kiln

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Dri Sponge Iron Rotary Kiln

Model: Φ2.2x38m--Φ4.3x64(m)

Capacity: 80tpd-700tpd

Material: Dri Sponge Iron

Materials:(different sizes for 120 kinds of stones)

  • benonite

    benonite

  • cement

    cement

  • clay

    clay

  • coals

    coals

Applied material:

The DRI sponge iron rotary kiln is a high temperature reaction plant for reducing iron ore to DRI sponge iron. It is a rotating plant, usually consisting of a long circular cylinder and a furnace shell, burner and heat exchanger rotating around it.The DRI sponge iron rotary kiln can operate at temperatures up to 1300 degrees Celsius for efficient iron ore reduction process.

The working principle of DRI sponge iron rotary kiln is based on the chemical reaction of direct reduction. The cylinder is rotated and heated, and a burner injects fuel into the cylinder and reacts with the iron ore at high temperatures.

During the reduction process, the carbon in the fuel vaporizes and combines with the oxygen in the iron ore to form gases such as CO and CO2, thereby reducing the iron ore to DRI sponge iron.

The reduction reaction usually needs to take place at high temperatures, so the high temperatures provided by the burner are critical. By controlling the speed and direction of rotation of the furnace shell, it is possible to ensure that the iron ore and fuel are well mixed and react evenly within the cylinder.

Rotary kiln calcination of sponge iron fuel used

According to its state, can be divided into:

1.  solid fuel, such as coal, coke, etc.

2.  liquid fuel, such as heavy oil, paraffin, diesel fuel, etc.

3. gas fuel, such as liquefied petroleum gas, furnace gas, natural gas, etc.

Working Principle:

1. The raw material (dolomite) is crushed by a crusher to a qualified material (30-40mm).

2. Sintered by rotary kiln and calcined to calcined white.

3. Cooled by a cooler.

4. Then passed through the ball mill to grind into powder.

5. Then pressed into balls by a ball press.

6. Crushed and mixed with ferrosilicon powder (containing 75% silicon) and fluorspar powder (containing GaF2)=95%) to make a homogeneous mass.

7. Loaded into a heat-resistant stainless steel reduction tank, placed in a reduction furnace, at 1200-1250°C and vacuum of 1.33 Pa vacuum degree reduction to produce crude.

8. After melt refining, ingot casting, surface treatment to obtain finished magnesium ingots.

Features And Advantages:

1. Support equipment: spindle layout, set with active temperature measuring equipment and electric heating equipment, together with movable supports for selection.

2. Shift wheel equipment: divided into two types: mechanical wheel and hydraulic thrust shift wheel. Hydraulic retaining wheel equipment is equipped with hydraulic control system.

3. Transmission equipment: with single transmission or double transmission. DC motor or frequency-controlled motor control speed, work reliably.

Technical Parameter

Specification
(m)
Kiln SizePower
(kw)
Wight
(t)
Remarks
Diameter(m)Length(m)Slope(%)Capacity
(t/d)
Speed
(r/min)
Φ2.5×402.5403.51800.44-2.4455149.61
Φ2.5×502.55032000.62-1.8655187.37
Φ2.5×542.5543.52800.48-1.4555196.29Kiln decomposition kilns
Φ2.7×422.7423.53200.10-1.5255198.5------
Φ2.8×442.8443.54500.437-2.1855201.58Kiln decomposition kilns
Φ3.0×453453.55000.5-2.4775201.94------
Φ3.0×483483.57000.6-3.48100237Kiln decomposition kilns
Φ3.0×6036048000.3-2100310------
Φ3.2×503.550410000.6-3125278Kiln decomposition kilns
Φ3.3×523.3523.513000.266-2.66125283Preheating decomposition kilns
Φ3.5×543.5543.515000.55-3.4220363Preheating decomposition kilns
Φ3.6×703.6703.518000.25-1.25125419Waste heat power kilns
Φ4.0×56456423000.41-4.07315456Preheating decomposition kilns
Φ4.0×604603.525000.396-3.96315510Preheating decomposition kilns
Φ4.2×604.260427500.41-4.07375633Preheating decomposition kilns
Φ4.3×604.3603.532000.396-3.96375583Preheating decomposition kilns
Φ4.5×664.5663.540000.41-4.1560710.4Preheating decomposition kilns
Φ4.7×744.774445000.35-4630849Preheating decomposition kilns
Φ4.8×744.874450000.396-3.96630899Preheating decomposition kilns
Φ5.0×74574460000.35-4710944Preheating decomposition kilns
Φ5.6×875.68748000Max4.238001265Preheating decomposition kilns
Φ6.0×95695410000Max5950×21659Preheating decomposition kilns

Henan Zoomjo Group Manufacturing Co., Ltd.

Company Industry Experience(40 Years)

Leading Manufacturer and Export Base of Crushing and Mining Machinery

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