650kW Green 8mm Low - Oxygen Copper Continuous Casting Machine 15 tons/hr

650kW Green 8mm Low - Oxygen Copper Continuous Casting Machine 15 tons/hr

TECHNICALDESCRIPTION OF

COPPER ROD CONTINUOUS CASTING & THREE ROLLING LINE

1. Application and Composition

This plant works to produce low-oxygen copper rod in 8mm diameter by means of

continuous casting and rolling process, with cathode and copper scrap as the raw material.

The plant is composed of one set of tilting&refining furnace with 30 tons capacity,

five-wheel casting machine, drive unit, roller shears, straightener and burring unit, shaver,

rolling mill, coiler, and electrical control system. If cathode is used, a melting furnace(shaft

furnace) with 16-ton/hour capacity and 12-ton holding furnace are required.

2. Brief Process Flow

Charging copper scrap (grade 1 or grade 2) → melting and refining in tilting&refining

furnace → launder to protect molten copper → ladle → casting machine to get cast bar

→ roller shears → straightener → burring unit → shaver to treat cast bar → feed-in

unit → rolling mill → cooling unit to quench rod → winding unit to pre-shape rod →

star coiler to lay rod into coil.

3. Copper Scrap as raw material

Red copper scrap as the raw material must be Grade 1 or Grade 2.

3.1. Copper scrap on excellent grade (Pb<100, Sn<300, Ni<50, Zn<50, Fe<50 and Sb<20)

should be clean and non-alloy copper wires free from tin, containing no fragile burned

pper contentno less than 98%

3.2. Copper scrap on grade 2 (Pb<1000, Sn<800, Ni<150, Zn<300, Fe< 500, Sb<100, S<200)

should be small director copper wires without insulation, usually containing telephone

wires, copper bus bar with varnish coating or paper insulation, and thick or thin, clean

copper pper contentno less than 94%

Charging raw material requirement:grade1(copper contentno less than 98%) must be more than 50%,

grade 2(no less than 94%) no less than 30%,motor’s enamelled wire <20%(copper contentno less than 92%).

4. Main Technical Specifications

4.1. Diameter of rod: φ8mm

4.2. Capacity: 12~15tons/hr.

4.3. Weight of coil: 3.0~5.0tons

4.4. Overall dimension of plant: 40×7.8×6.1m (not including melting furnace and cooling

water circulation system)

4.5. Weight of plant: 85 tons (not including furnaces)

4.6. Total power of plant: 650kW (not including furnaces)

5. Components and Specifications

5.1. 30T tilting&refining furnace 1 set

5.1.1 Gas source requirement:( Description: the natural gas and liquefied petroleum gas (LPG)

are available, the following gas for example) 2

5.1.1.1 Calorific value: NG 8500 kcal/ Nm 3

5.1.1.2 Flux(combustion system): Q :450Ｎm 3 /h

5.1.1.3 NG supply pressure: P:0.15—0.2Mpa

5.1.1.4 Flux(reduction system): Q :300Ｎm 3 /h(working 2~3 hours)

Reduction system pressure: P:0.3—0.4Mpa

Or using living tree(wood) to reduce the oxygen in the liquid mixed metal.

5.1.1.5 Compressed air source requirement(share with CCR)

5.1.1.6 Flux: Q : 20m 3 /min

5.1.1.7 Pressure: 0.4MPa

5.1.1.8 Properties: Must be dry , no water and oiliness

5.1.1.9 Cooling water

5.1.1.10 Flux: Q : 100NM3/H

5.1.1.11 Pressure: 0.4MPa

5.1.1.12 Nitrogen

5.1.1.13 Pressure: 0.6Mpa Q:200NM 3 /H(only one hour)

5.1.2. Equipment composition:

This set of tilting furnace including furnace body, DC drive system, gas combustion

system , REDOX system,electric control system.

Customer own:smoke hoods,chimney flue(about 50M), dust collection

system,charging device(forklift),launder,NG regulator station,air compressor,cooling

water supply system,power supply system ,direct reading spectrometer,oxygen

nitrogen analyzer,metallurgical temperature and oxygen online detector,tools of lay

bricks,tools and devices of commissioning,all installation material.

5.1.3. Technical specification

5.1.3.1 Melting furnace type: titled type circular furnace

5.1.3.2 Copper melting time: about 9 hours

5.1.3.3 Oxidized time: about 2 hours

5.1.3.4 Reduction time: about 2 hours

5.1.3.5 Charging ways: forklift truck ends charging

5.1.3.6 Furnace effective capacity: not less than 30T

5.1.3.7 Raw material copper content no less than 98%+no less than 94%+no less than 92%

5.1.3.8 NG consumption of per ton rod low-oxygen copper rod: 90~100NM3

5.1.3.9 Furnace lining Mg-chrome bricks and mg-chrome castable, etc

5.1.3.10 Fuel NG

5.1.3.11 Ignition method manual

5.1.3.12 Dia of gas supply pipe DN100

5.1.3.13 The total power 80KW

5.2. Five-