For the ferroalloy and calcium carbide industries, the tapping process has always been the top priority of safety management. Workers have to work close to molten materials at temperatures exceeding 1600°C under intense thermal radiation, while staying alert to sudden hazards such as carbon monoxide poisoning and furnace material splashing (tap-hole leakage or furnace blowout). This not only imposes severe physical and mental strain on workers, but also constitutes the weakest link in enterprises’ safety production systems.

Traditional tapping operations rely heavily on the experience and intuitive judgment of veteran operators. The positioning of furnace hole tapping, as well as the timing and force for tap-hole plugging, directly affect furnace stability, product quality and energy consumption. Fluctuations arising from human variables lead to inconsistent productivity and uneven product quality across different shifts, while valuable operational expertise is difficult to replicate and pass down.

For the ferroalloy industry: Robots precisely follow the optimal tapping path to maintain sound tap-hole conditions and smooth tapping flow. They minimize tap-hole damage and furnace instability caused by improper manual operation, guaranteeing continuous and stable production of ferrosilicon, ferromanganese and other ferroalloys, and directly boosting product quality and output.

For the calcium carbide industry: Molten calcium carbide features higher fluidity and greater operational hazards. In strict accordance with process standards, robots perform rapid, accurate tap-hole tapping and plugging to precisely control tapping duration and cut the residence time of calcium carbide inside the furnace. This stabilizes the gas yield of finished calcium carbide and indirectly reduces power consumption per ton of calcium carbide.

Cost Reduction, Efficiency Improvement & Green Manufacturing

Labor Cost: Despite high upfront investment, robots stand ready for operation 24/7 and seamlessly cover three shifts around the clock. In the long run, they drastically cut high labor expenses and reduce enterprises’ reliance on specialized workers for hazardous posts.

Energy Consumption Cost: Stable tapping operation helps maintain a stable reaction zone inside the furnace, which is the key to cutting power consumption of submerged arc furnaces.

Maintenance Cost: Precise operation reduces damage to tap-holes and furnace linings, extends equipment service life, and lowers maintenance frequency and costs.

Robots can achieve efficient linkage with environmental protection facilities to realize smokeless tapping during discharging. Dust and waste gas generated in production are collected and treated to the maximum extent, greatly improving the workshop environment and helping enterprises meet increasingly stringent environmental emission standards.

The value of tapping robots goes far beyond simply replacing manual labor at a single station. They serve as a crucial gateway for the comprehensive intelligent and digital transformation of the ferroalloy and calcium carbide industries. Every operation performed by tapping robots in front of submerged arc furnaces represents a profound revolution against traditional production modes. As vital basic industries supporting the national economy, the ferroalloy and calcium carbide sectors benefit tremendously from this technology. Tapping robots act as a powerful solution to safety and environmental pressures as well as labor shortages. Furthermore, they constitute an indispensable path for enterprises to boost core competitiveness and advance toward high-end, intelligent and green development.