Treatment of calcium carbide dust

If conditions permit, the company can install a calcium carbide dust recovery system, which allows the calcium carbide dust to be fed into the generator to participate in the reaction, thereby reducing the consumption of acetylene and calcium carbide and preventing environmental pollution. The principle is simple: a conveyor system is used to deliver electroslag to the top hopper of the generator, where it is added in small amounts multiple times into the upper storage hopper before entering the generator. Note: Prevent crushed calcium carbide from entering the system, to avoid excessive addition affecting the stable operation of the system.

The common practice these days is recycling, as mentioned above. The investment is small, but the returns are significant

The best solution for calcium carbide dust is to eliminate its formation. Hazards of calcium carbide powder: 1. Environmental pollution: The working environment is harsh and can cause harm to the human body ； 2. Gas generation loss: The calcium carbide powder reacts with moisture in the air, resulting in too low a volume of gas available for reuse ； 3. Safety hazard: Calcium carbide powder can reform into the hazardous gas acetylene. 4. High collection cost: Dust collection is usually used for collection. The fundamental solution lies in achieving dust-free operations. 1. Calcium carbide blocks are crushed directly, eliminating the outdated semi-manual crushing method (where calcium carbide blocks fill the entire workshop and are roughly crushed by throwing, hitting, and colliding them – a process that generates a lot of dust). 2. All processes related to the crushing of calcium carbide take place in the acetylene workshop; the calcium carbide workshop does not participate in the crushing operations. 3. For how to directly crush calcium carbide lumps, you can consult our company ； 4. The calcium carbide crushing process is arranged in a centralized manner; sealing is carried out immediately after crushing, thereby preventing the calcium carbide from being exposed to air after crushing ； 5. Ensure proper sealing of crushing equipment, screening equipment, and conveying equipment to prevent leaks ；

The wet method involves adding it to the reactor in proportion.

Our company plans to use pneumatic conveying to transport the material to a balling machine, where the electric lime will be compressed into calcium carbide balls with a diameter of 20 to 50 millimeters. At present, only designs have been prepared; the actual installation has not yet taken place, so it’s not clear what the results will be. :):)

Ball compaction recycling? It should be possible; it relates to granulation

First, how are calcium carbide balls made? Secondly, calcium carbide balls are highly brittle and porous, making ball compression recycling merely theoretical. Next is blowing it in – how much can be absorbed? It’s not calcium carbide slag; it’s calcium carbide dust, and it also has a gas evolution rate.

I’ve already used it, and the ball-pressing effect is good; it’s not as fragile as the moderators thought. After ball pressing, it is transported outside for recycling into the wet hair generator for reaction

How is the ball pressing technique used? What kind of setting agents are added to calcium carbide dust?

There’s no need for coagulants or anything similar; if you search for ball pressing machines on Baidu, you’ll see that the principle is the same in all cases. On my end, since we use a dry process, dealing with slaked lime has been quite problematic; I’ve considered using pneumatic conveying to send it to the silo so that it can be evenly added to the dry process generator ； I considered setting up a small wet-process system; I talked with potential partners for cooperation, but after all the calculations, it turned out to be uneconomical. Fortunately, there was a company that collected ash to use it in producing acetylene reference gas. Due to the difficulties in transporting it and the losses in gas output that this entailed, I opted for this small device. So far, it seems to be the right choice – the performance is good, and I no longer have any concerns...