1. Raw material section

2. Furnace optimization - slag outlet flue gas treatment

3. Furnace optimization - modification of furnace opening blockage

4. Slag pool - slag and flue gas

5. Tail gas treatment

6. Sedimentation tank - steam recovery

7. Sedimentation tank - sludge and phosphorus treatment

8. Smoke treatment

The traditional raw material section includes (drying) - screening - electric furnace, but the disadvantage is that a large amount of dust spreads into the air, causing air pollution and occupational diseases (as shown in Figure 1).

Transformation process: Using a bag filter to collect dust, transporting it through a collection pipeline, and conducting centralized treatment (as shown in Figure 2).

Traditional raw material processing section: without treatment, the smoke is discharged unorganized, causing air pollution (as shown in Figure 1).

Transformation process: Install a gas collection hood, collect the flue gas from the slag discharge outlet (organized), wash the flue gas to meet the emission standards, and discharge it centrally (as shown in Figure 2).

Traditional furnace opening and blocking: use yellow mud to block the furnace opening, and use an oxygen blowing pipe to poke the mud plug at the opening. Disadvantage: It is easy to cause deformation and damage to the furnace eye (as shown in Figure 1).

Transformation process: plugging and foaming mud, opening and using a robotic arm. Advantages: Using machinery instead of manual labor increases the service life of the furnace eye (as shown in Figure 2).

Traditional process: open slag pool, with unorganized emission of flue gas from the slag pool (as shown in Figure 1).

Transformation process: The slag pool adopts semi closed or fully closed methods to recover the flue gas from the slag pool and conduct centralized treatment. Excavate or transport the slag into the slag silo, and then transport it to the user factory using trucks (as shown in Figures 2 and 3).

Traditional process: Most of them are used as fuel or directly burned and vented with a torch (commonly known as "lighting the sky lamp") (as shown in Figure 1).

Transformation process: Using exhaust gas collection, water washing, alkali washing, liquid sealing, gas holder transportation as fuel (with a utilization rate of over 90%) without discharge (as shown in Figure 2).

Traditional process: open-air discharge (as shown in Figure 1).

Renovation process: Slag pool, equipped with a ceiling and negative pressure collection system to prevent steam discharge, collected - centrally treated - and discharged after meeting emission standards (as shown in Figure 2).

Transformation process: Effectively collect and treat sludge phosphorus, use intermittent rotary pot burning acid to recover yellow phosphorus, and the remaining solid can be used for fertilizer without discharge.

Traditional process: direct discharge (as shown in Figures 1 and 3).

Transformation process: hot air furnace whitening (as shown in Figure 2) and wet electrostatic precipitator and mist (whitening) (as shown in Figure 4).