Flexibility is a must to survive in live market

 

Many of the latest crushing or screening machines have also been developed to offer very high productivity while lowering fuel consumption at the same time.
As for copper melting process, the reverberatory furnace smelting operation is a continuous process, with frequent charging and periodic tapping of matte, as well as skimming slag. Heat is supplied by natural gas, with conversion to oil during gas restrictions. Furnace temperature may exceed 1500°C (2730°F), with the heat being transmitted by radiation from the burner flame, furnace walls, and roof into the charge of roasted and unroasted materials mixed with flux. Stable copper sulfide (Cu2S) and stable FeS form the matte with excess sulfur leaving as sulfur dioxide.
Metso claims to have produced up to 30% fuel consumption savings on its new Lokotrack LT106 cone crusher compared to its predecessor. This significant saving has been achieved thanks to combining a fuel-efficient Caterpillar 9.3 Tier 4-compliant engine with improved hydraulics and a larger flywheel mass.
Lokotrack LT106 product manager Jouni Hulttinen said, "Today, with rising energy prices, fuel economy is becoming more crucial for cost efficient crushing contracting. While designing the LT106, special attention was paid to the overall fuel economy. The field tests show that the targeted savings in fuel have been well reached."
The machine is built around the C106 jaw crusher, which boasts increased productivity thanks new features including a material sensor for continuous choked feed.
Electric arc furnace smelters generate heat with carbon electrodes that are lowered through the furnace roof and submerged in the slag layer of the molten bath. The feed consists of dried concentrates or calcine. The chemical and physical changes occurring in the molten bath are similar to those occurring in the molten bath of a reverberatory furnace. The matte and slag tapping practices are also similar.
Meanwhile, Rubble Master concentrated on making transport easier when it designed its new RM100 GO crusher. This machine features a removable main discharge belt, a quick release crusher system and the new MS100 GO finishing screen. Rubble Master noted that it is becoming increasingly difficult to obtain special permits for the transport of large machines, adding, "flexibility is a must these days to survive in this lively market."
The Noranda process, as originally designed, allowed the continuous production of blister copper in a single vessel by effectively combining roasting, smelting, and converting into 1 operation. Metallurgical problems, however, led to the operation of these reactors for the production of copper matte. The Noranda process uses heat generated by the exothermic oxidation of hydrogen sulfide. Additional heat is supplied by oil burners or by coal mixed with the ore concentrates.
On the screening side, WS Tyler has developed an alternative to traditional screen media that combines polyurethane with woven wire cloth - the TY-Wire.