Gas Fired Melting Furnaces- MIFCO

Gas Fired Melting Furnaces-maximum temperature 2400 deg F. Will run on natural gas or propane-adjust the gas air mixture accordingly (no orifice to change).

Click on the Product Support tab (top right) to view a start up video of a MIFCO melter

All B and C series furnaces manufactured in the year 2015 and later meet the minimum NFPA 86 guidelines (applies to burner systems over 150,000 BTU/HR):

Two valves required on pilot and main burners
Visual indication of valve position required for burners above 150,000 BTU/HR
High and low gas pressure switches required
Burners above 400,000 BTU/HR require visual indication and proof of closure

We recommend that the customer install a pressure gauge and regulator on their incoming line. We DO NOT provide these. It is the responsibility of the customer to know their local and state codes.

If the furnace is to be installed into a pit, please call for pit dimensions and blower configurations.

Ventilation and Hoods– click here

B&C Furnaces Amp Draw Chart- click here

B & C Furnaces-Gas Piping Information– click here

C-Series Melters with 4UV safety system

POT AND CRUCIBLE FURNACE
SOFT METAL MELTERS
MODELS C-10 AND C-20

Capacities: 10 LBS. to 20 LBS. ALUMINUM
30 LBS. to 60 LBS. YELLOW BRASS

c10

c20

C-Series Specifications

The primary differences between the Soft Metal Melters and the High Speed Melters are the cover design, melting speeds and temperature range. The Models C-10 and C-20 will melt aluminum and brass at moderate speeds and do not attain the high temperatures necessary for melting grey iron.

The differences in cover design is obvious in the illustrations. When using the furnace as a pot melter, a cast chrome iron melting pot is supported in the furnace chamber by the ring section of the cover. When aluminum is ready to pour, a detachable pouring handle locks in the lifting eyes of the melting pot and then is poured into the molds. The metal being melted is always visible and the ease of handling the melt makes this model extremely popular in Junior and Senior High Schools.

For melting brass at higher temperatures, the cover lid is dropped to close the pot ring opening. The cover is raised and pivots to the rear of the furnace so a crucible can be charged into the furnace chamber for the melting cycle. Slower melting speeds and lower temperatures allow the use of Super Duty High Alumina Refractory. Crucible tongs and shanks are required for withdrawing and pouring the crucible of metal.

COMBINATION CRUCIBLE AND POT FURNACE for melting aluminum or lead in a steel or cast iron pot suspended in the ring section of the furnace cover, or for melting aluminum and brass in a crucible inside the furnace chamber. Temperature range 1200° F to 2400° F.

MELTING TIME for melting a cast iron pot of aluminum approximately 24 minutes. Melting time for crucible in closed furnace chamber for aluminum approximately 18 minutes, for brass approximately 35 minutes.

Furnaces are supplied with a No. 4 Ultra Violet System with spark ignition.

SECTIONAL HARD BURNED LINING and two piece cover are High Alumina Super Duty refractory, capable of withstanding temperatures in excess of 3000° F. The refractory sections are kiln fired to develop excellent resistance to scuffing and spalling. The sectional design prevents cracking due to thermal expansion. All shapes are cemented in place with high temperature mortar. The combination of pre-burned sections and high quality alumina refractory provides exceptionally long lining life. The combustion chamber lining is backed by a wall of high temperature refractory insulation which reduces heat loss through the furnace walls, gives more comfortable operation and greater efficiency. Relining kits are available for field installation.

STEEL WELDED CONSTRUCTION of heavy gauge furnace shell and reinforcing members conform to industrial specifications. Hot rolled bar is used for support rings and lid bands. The two piece furnace cover is recessed in a cast chrome iron top protection plate. The lid derrick is front operating, with removable handle. Lid swings to rear of furnace when open. A drain hole is located in the bottom of the furnace for drainage of overflow of metal. The exhaust port is at the rear of the furnace.

DIMENSIONS AND SPECIFICATIONS OF SPEEDY MELT SOFT METAL MELTERS

FURNACE MODEL	CRUCIBLE SIZE MELTING	CRUCIBLE SIZE LADLING	METAL POT SIZE	COMBUSTION CHAMBER DIMENSIONS	A	B	C	FLOOR SPACE D & E	BLOWER AND MOTOR RATING	BTU GAS RATING	GAS LINE SIZE	GAS VALVE SIZE	GAS PRESSURE
C-10	No. 10	No. 16	6" x 8"	10"Dia - 10"Deep	17 1/2"	21 1/2"	22"	25"D - 46.5"E	40CFM 1/3 HP	225,000	1"	1/2"	4-6 oz.
C-20	No. 30	No. 40	8" x 10"	13"Dia - 16"Deep	23-1/4"	27-1/2"	24.5"	29.5"D - 48"E	70CFM 1/2 HP	325,000	1-1/4"	3/4"	6-8 oz.

B-Series Melters with 4UV Safety System

Capacities:
Aluminum: 10 lbs. to 225 lbs.
Brass: 45 lbs. to 675 lbs.
Grey Iron (CLASS 25-30 ONLY): 45 lbs. to 675 lbs.

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.

Accessory packages available:

100404 B160 pkg includes #16 silicon carbide crucible, 16B tong, S116SE shank, MT400 pyrometer

100604 B301 pkg includes #30 silicon carbide crucible, 30B tong, S230SE shank, MT400 pyrometer

100804 B702 pkg includes #70 silicon carbide crucible, 670B tong, S670SE shank, MT400 pyrometer

FOR PIT INSTALLATIONS-(blower is not to be placed in the pit):

B301 furnace -58″ x 46″ x 15″ deep pit needed for furnace body

B702 furnace- 50″ x 70″ x 20″ deep pit needed for furnace body

B1501 furnace-70″ sq x 27″ deep pit needed for furnace body

Click below link for line drawings:

B160 line drawing- floor space

B301 B702 B1501 B2001 line drawing and floor space requirement

FURNACE MODEL	CRUCIBLE SIZE	CAPACITY PER MELT- BRASS/ ALUMINUM	COMBUSTION CHAMBER DIMENSIONS	BLOWER AND MOTOR RATING	BTU GAS RATING and GAS PRESSURE	GAS LINE SIZE	GAS VALVE SIZE	APP. SHIPPING WEIGHT
B-160	No.10 thru No.16	48 lbs 16 lbs	10"Dia - 12"Deep	90CFM 1/2 HP	425,000 4-6 oz.	1-1/4"	3/4"	594 lbs.
B-301	No. 20 thru No. 30	90 lbs 30 lbs	13"Dia - 15-1/2"Deep	150CFM 1 HP	750,000 6-8 oz.	1-1/2"	1"	920 lbs.
B-702	No. 40 thru No. 70	210 lbs 70 lbs	17"Dia - 20"Deep	210CFM 2 HP	900,000 8-10 oz.	2"	1-1/4"	1,676 lbs.
B-1501	No. 80 thru No. 150	450 lbs 150 lbs	21"Dia - 24"Deep	230CFM 2HP 3ph 3HP 1ph	1,200,000 10-12 oz.	2"	1-1/4"	2,786 lbs.
B2001	No. 150 thru No. 225	675lbs 225lbs	23"Dia - 25"Deep	230CFM 2HP 3 ph 3HP 1 ph	1,200,000 10-12 oz.	2"	1-1/4"	3,575 lbs.