Rotary kiln and technique for processing composition brass or block shaped raw copper

Abstract

The invention discloses a rotary furnace which is cylindrical, a charging opening which is horizontally arranged is opened on the rotary furnace; a slag hole and a copper discharge opening are opened on a furnace body; a hole for mounting a burner is opened on an end cover of the furnace body; a vent hole is radially opened on the other side of the end cover of the furnace body with the hole for the burner; an oxidation and reduction air port is opened on the furnace body; a support is arranged at the lower part of the furnace, and the furnace body can be rotated on the support. The process for processing mixed copper or block-shaped crude copper by utilizing the rotary furnace adopts heavy oil, natural gas, pulverized coal and other fuels, oxygen can also be added for combustion for providing a heat source for melting solid copper materials, compressed air is taken as an oxidant, quartz sand is taken as a flux, the impurities are removed by oxidation and slagging, then the natural gas or LPG, etc., is introduced for reduction, thereby producing anode copper; flue gas is introduced into a secondary combustion and waste heat boiler for carrying out waste heat recovery, cooling and dust collection by a smoke cover. The rotary furnace has the advantages of high thermal efficiency, energy conservation, good environmental protection effect, high degree of automation and mechanization, safe operation, relatively low investment, but no no black smoke pollution, etc., thereby being particularly applicable to large and medium-sized mixed copper refineries for use.

Description

technical field [0001] The invention relates to a rotary furnace and its process for treating miscellaneous copper or block blister copper. Background technique [0002] With the increasing shortage of copper concentrate resources, more and more manufacturers are paying attention to using miscellaneous copper as raw material to produce cathode copper to make up for the shortage of mine cathode copper. However, most miscellaneous copper refineries in China currently use reverberatory furnaces for refining, which have many problems such as low redox efficiency, low degree of automation, high labor intensity, hidden safety hazards in manual operations, black smoke pollution and environmental protection failure. . As the country pays more and more attention to energy saving, environmental protection and production safety, reverberatory furnaces are facing the situation of being eliminated for refining miscellaneous copper. Although foreign tilting furnaces are energy-saving, en...

AI Technical Summary

Problems solved by technology

However, most miscellaneous copper refineries in China currently use reverberatory furnaces for refining, which have many problems such as low redox efficiency, low degree of automation, high labor intensity, hidden safety hazards in manual operations, black smoke pollution and environmental protection failure.

As the country pays more and more attention to energy saving, environmental protection and production safety, reverberatory furnaces are facing the situation of being eliminated for refining miscellaneous copper. Although foreign tilting furnaces are energy-saving, environmentally friendly and safe, they need to purchase the right to use, and the cost is very high, so Many domestic miscellaneous copper production plants are eager to find a new furnace type and supporting technology that can replace reverberatory furnaces, but can meet the standards of tilting furnaces in terms of energy saving, environmental protection and safety, and low cost

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