High-pressure alkaline leaching method for high-silicon cobalt sulfide copper ore

The invention relates to a high-pressure alkaline leaching method for high-silicon cobalt sulfide copper ore. The high-pressure alkaline leaching method comprises the following steps that ground high-silicon cobalt sulfide copper ore and an alkaline solution or alkaline slurry are correspondingly added into a high-pressure kettle, heating is carried out to 90-100 DEG C, oxygen is introduced, continuously heating is carried out to a leaching temperature, and high-pressure alkaline leaching is carried out to obtain a leachate; and solid-liquid separation is carried out on the leachate to correspondingly obtain leaching residues and copper-cobalt-containing filtrate. The high-pressure alkaline leaching method is simple, efficient and easy to industrialize, and the high-pressure leaching technology is high in one-time investment, obvious in advantages and low in cost. The high-pressure alkaline leaching method can further be used for other sulfide mineral raw materials such as cobalt-copper sulfide ores and nicke