The B-1501 will handle a range of crucible sizes from No. 80 through No. 150. The No. 150 holds about 450 pounds of yellow brass per melt. The chamber dimensions are 21 inches diameter by 24 inches deep. The working height from the floor to the top of the lid derrick is 51 inches. With the blower mounted in the in-line position, the furnace measures 66 inches from the front surface of the barrel to the inlet edge of the gas solenoid. You should have an extra 12 inches to plumb in the gas line, so figure a minimum of 78 inches from the wall to the front edge of the furnace. The dimension from the left burner inlet to the back edge of the blower is about 83 inches, so you can figure floor space requirements at about 66 inches by 83 inches. The overall height of the turbo blower is 31 inches. The center of the 2-1/2 inch pipe union which connects the blower mixer assembly to the furnace manifold is 16-1/2 inches.

The lining is a high alumina, sectional, pre-burned lining backed with insulation. The design is very similar to the B-702 furnace except for size and capacity. It is supplied with a No. 4 Ultra Violet System with spark ignition.

B-Series General Specifications

FLEXIBILITY, VERSATILITY and ECONOMY:

MIFCO manufactures some of the most versatile melting furnaces available. The wide temperature range will allow the melting of most non-ferrous metals used in casting and some grey iron up to class 30 or 35. All of these units have a temperature range of 1200° to 2400° F and are designed to melt as rapidly as possible. In the school shop or industrial foundry, these units have an immediate and profitable application. They cover nearly the entire range of modern melting needs. The initial investment for this type of industrial equipment is nominal and the maintenance is held to an absolute minimum due to the rugged construction and high quality of the furnace lining.

RUGGED, WELDED STEEL CONSTRUCTION:

The outer shells of MIFCO furnaces are heavy gauge steel, reinforced where necessary, with rolled steel bars and welded throughout. The rugged construction conforms to the highest industrial standards. The lid support rings are also constructed of heavy gauge rolled steel bars. The furnace lids are recessed in sectional cast chrome-iron protection plates. The lid derrick is simple in design and sturdily constructed with a detachable handle to prevent overheating. Structural steel legs provide air circulation beneath the unit to prevent overheating of the foundry floor. The low operating height provides greater convenience for charging of the crucible. Each unit is provided with an overflow and drain hole in the base of the furnace.

SECTIONAL REFRACTORY LINING:

Super-duty, high alumina, hand-made, air rammed and pre-fired refractory shapes are used in the lining and dome shaped lids of all MIFCO High Speed Melters. The rapid melting schedules and capacity to melt grey iron make it mandatory that we use the best refractory material available to insure long life of the furnace lining. Super-duty high alumina can withstand the drastic temperature changes due to rapid heating and can operate at temperatures in excess of 3000° F without spalling or deterioration. Sectional linings facilitate movement during heating to prevent thermal cracking and deterioration of the lining and lid. Field replacement of the linings and lids is rapid and easy. Refractory relining kits are available for all MIFCO furnaces.

HIGH TEMPERATURE INSULATION:

High temperature castable insulation between the steel shell and the combustion chamber lining combine high strength and excellent insulating properties. This provides faster heating, lower heat loss and greater burner efficiency.

BURNER SYSTEM:

The MIFCO gas-air mixer will utilize any type of fuel gas - natural, bottled or tank. The venturi design of the aspirator mixer develops a slight suction against the main gas line, eliminating the need for check valves. The standard mixer system is a manual two-valve control which permits the operator to set any type of flame or atmospheric characteristics desired. Both the gas and air valves are conveniently located. The type of fuel gas can be changed as desired without having to change an orifice or jet on the mixer. Each furnace is shipped complete with a blower. It is only necessary to make gas and electrical connections and the furnace is ready to operate.

COMBUSTION SAFEGUARD SYSTEM:

Combustion safeguard systems are standard equipment on all MIFCO furnaces. The burner control is an industrial type, electronic unit activated by a flame sensor that detects the ultra-violet spectrum of the burner flame. Response to a flame failure of any kind is within 2 to 4 seconds and flame monitoring is continuous. The burner system is ignited by a timed electronic spark. In the event of a flame failure, reset of the burner control is manual.

DIMENSIONS AND SPECIFICATIONS OF SPEEDY MELT HIGH SPEED MELTERS

FURNACE MODEL

CRUCIBLE SIZE

CAPACITY PER MELT- BRASS/ ALUMINUM

COMBUSTION CHAMBER DIMENSIONS DIA DEEP

A

B

C

FLOOR SPACE D E

BLOWER AND MOTOR RATING

GAS RATING IN 1000 BTU 6" TO 9" W.P.

GAS LINE SIZE

GAS VALVE SIZE

APPROX. SHIPPING WEIGHT

B-160

No. 10 thru No. 16

48 lbs./ 16 lbs.

10" 12"

19-1/2"

30-1/2"

20"

22-1/2" 56"

90CFM 1/2 HP

425,000

1-1/4"

3/4"

550 lbs.

B-301

No. 20 thru No. 30

90 lbs./ 30 lbs.

13" 15-1/2"

21"

36"

23"

27-1/2" 76"

150CFM 1 HP

750,000

1-1/2"

1"

915 lbs.

B-702

No. 40 thru No. 70

210 lbs./ 70 lbs.

17" 20"

23"

42"

30"

34" 80"

210CFM 2 HP

900,000

2"

1-1/4"

1,575 lbs.

B-1501

No. 90 thru No. 150

450 lbs./ 150 lbs.

21" 24"

35"

51"

38"

42" 83"

230CFM 2 HP

1,200,000

2"

1-1/2"

2,666 lbs.

*Crucible size designates capacity of pounds of aluminum per melt.
Above furnaces are furnished with 110/220 volt, single phase or 220/440 volt, three phase blowers.