{"id":1474,"date":"2026-05-30T21:02:27","date_gmt":"2026-05-30T18:02:27","guid":{"rendered":"https:\/\/cfc.codev-eg.com\/?page_id=1474"},"modified":"2026-06-03T01:42:29","modified_gmt":"2026-06-02T22:42:29","slug":"furnace-wall-cleaning-flux","status":"publish","type":"page","link":"https:\/\/cfc.codev-eg.com\/fr\/products\/metallurgical-chemicals\/non-ferrous-metal-treatment\/aluminum-treatment\/furnace-wall-cleaning-flux\/","title":{"rendered":"Furnace wall cleaning flux"},"content":{"rendered":"\t\t
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Aluminium Treatment \u2014 Furnace Maintenance\n<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t
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Furnace Wall\nCleaning Flux<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t
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Furnace wall cleaning flux for aluminium is a specialist flux applied to the refractory walls of aluminium melting and holding furnaces to dissolve and detach the oxide and corundum deposits that accumulate above the bath line over time, restoring furnace capacity and preventing the contamination of the melt that occurs when oxide scale falls into the bath.\n\n<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t
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In any aluminium melting furnace, the refractory surface above the liquid bath level is exposed to metal splash, vapour condensation, and direct oxide accumulation from the bath surface. Over weeks of operation this builds into a dense, adherent crust of aluminium oxide and corundum that progressively reduces furnace capacity, traps metal, and \u2014 when it eventually breaks off \u2014 introduces large oxide inclusions into the melt. CFC Egypt's EGYFLUX 900 is applied directly to the oxide-encrusted wall surface at operating temperature, where it reacts with and loosens the deposit for raking removal. Regular wall cleaning with EGYFLUX 900 is a maintenance treatment that protects furnace capacity, extends refractory life, and keeps the melt quality high between major refractory campaigns.\n\n<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t
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Where Furnace Wall Cleaning Is Used\n<\/h2>\t\t\t\t<\/div>\n\t\t\t\t
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Furnace wall cleaning flux is a maintenance treatment for any aluminium melting or holding furnace where oxide build-up above the bath line reduces capacity or introduces contamination.\n\n<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t
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Reverberatory Furnaces \u2014 High Throughput\n<\/h2>\t\t\t\t<\/div>\n\t\t\t\t
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Large reverberatory furnaces processing hundreds of tonnes of aluminium per week accumulate oxide build-up rapidly above the bath line \u2014 particularly on the side walls, back wall, and door frames exposed to metal splash during charging. Left unmanaged, this build-up reduces furnace capacity by narrowing the usable volume and adds contamination risk. Regular wall cleaning with EGYFLUX 900 on a weekly maintenance schedule prevents the build-up from becoming structural and avoids unplanned downtime for cold raking or mechanical descaling.\n\n<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t
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Induction Melting Furnaces\n<\/h2>\t\t\t\t<\/div>\n\t\t\t\t
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In induction furnaces, the oxide crust that forms on the crucible or furnace shell above the bath surface can restrict the movement of the charge, reduce the effective melting volume, and \u2014 if it contains trapped metal pockets \u2014 create an uncontrolled metal-fall hazard when the crust breaks during operation. Wall cleaning flux applied periodically to the above-bath surfaces loosens this crust before it becomes mechanically significant, maintaining safe and predictable furnace operation.\n\n<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t
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HPDC & Gravity Casting Holding Furnaces\n<\/h2>\t\t\t\t<\/div>\n\t\t\t\t
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Holding furnaces in high-pressure die casting and gravity casting operations are particularly susceptible to oxide build-up on the neck and tuyere areas where metal transfers in and out. Oxide scale falling from these surfaces into the pouring metal immediately before injection can cause surface defects, cold-shuts, and inclusion porosity in the casting, causing production scrap. Regular wall cleaning maintains the holding furnace in a clean condition, reducing the oxide inclusion burden on the metal entering the die.\n\n<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t
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Secondary Remelters \u2014 Accelerated Build-Up\n<\/h2>\t\t\t\t<\/div>\n\t\t\t\t
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Secondary aluminium remelters processing scrap with high surface oxide content \u2014 painted, coated, or corroded material \u2014 generate oxide build-up on furnace walls at a significantly faster rate than primary ingot operations. For secondary facilities running continuous three-shift operations, furnace wall cleaning may be required every two to three days to maintain furnace capacity and metal yield, versus a weekly schedule in cleaner primary operations.\n\n<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t
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CFC Furnace Wall Cleaning Flux\n<\/h2>\t\t\t\t<\/div>\n\t\t\t\t
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EGYFLUX 900 \u2014 specialist flux for dissolving and detaching oxide and corundum deposits from aluminium furnace refractory walls at operating temperature.\n\n<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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Frequently Asked Questions\n<\/h2>\t\t\t\t<\/div>\n\t\t\t\t
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Technical questions on furnace wall oxide build-up and how cleaning flux removes it from aluminium furnace refractories.\n\n<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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What is the oxide and corundum build-up on aluminium furnace walls? <\/div><\/span>\n\t\t\t\t\t\t\t\n\t\t\t<\/path><\/svg><\/span>\n\t\t\t<\/path><\/svg><\/span>\n\t\t<\/span>\n\n\t\t\t\t\t\t<\/summary>\n\t\t\t\t
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Above the bath line in an aluminium melting furnace, the refractory walls are exposed to metal splash, fume condensation, and direct contact with the bath surface during charging and tapping cycles. Over time, aluminium oxide (Al\u2082O\u2083) and corundum \u2014 a hard crystalline form of aluminium oxide \u2014 accumulate as a dense, adherent deposit on the refractory surface. This build-up reduces furnace capacity, narrows the freeboard, makes drossing more difficult, and can intermittently break off and fall into the melt, introducing oxide inclusions into the metal before pouring.\n\n<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/details>\n\t\t\t\t\t\t
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How is furnace wall cleaning flux applied to an aluminium furnace? <\/div><\/span>\n\t\t\t\t\t\t\t\n\t\t\t<\/path><\/svg><\/span>\n\t\t\t<\/path><\/svg><\/span>\n\t\t<\/span>\n\n\t\t\t\t\t\t<\/summary>\n\t\t\t\t
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Furnace wall cleaning flux is typically applied by throwing or spreading it onto the oxide-encrusted refractory wall surfaces above the bath line, either during normal melting operations or during a dedicated cleaning cycle with the furnace at operating temperature. At temperature, the flux melts and reacts with the oxide deposit, dissolving or detaching it from the refractory surface. The released material falls into the bath or can be raked off the wall. The furnace is then drossed to remove the loosened material from the melt surface.\n\n<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/details>\n\t\t\t\t\t\t
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How often should aluminium furnace walls be cleaned with flux? <\/div><\/span>\n\t\t\t\t\t\t\t\n\t\t\t<\/path><\/svg><\/span>\n\t\t\t<\/path><\/svg><\/span>\n\t\t<\/span>\n\n\t\t\t\t\t\t<\/summary>\n\t\t\t\t
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Frequency depends on furnace type, alloy grade, melt temperature, and metal throughput. High-temperature alloys and heavy secondary scrap melting generate oxide build-up faster than primary ingot remelt. For most aluminium melting furnaces, wall cleaning flux treatment is performed on a weekly or monthly maintenance schedule, or whenever visual inspection shows significant oxide accumulation \u2014 typically identified by reduced freeboard, difficulty closing furnace doors, or loose scale falling into the bath.\n\n<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/details>\n\t\t\t\t\t\t
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Which CFC product is the furnace wall cleaning flux for aluminium? <\/div><\/span>\n\t\t\t\t\t\t\t\n\t\t\t<\/path><\/svg><\/span>\n\t\t\t<\/path><\/svg><\/span>\n\t\t<\/span>\n\n\t\t\t\t\t\t<\/summary>\n\t\t\t\t
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CFC Egypt manufactures EGYFLUX 900 as the furnace wall cleaning flux for aluminium. It is designed to dissolve and detach the oxide and corundum deposits that accumulate above the bath line on furnace refractory surfaces, restoring furnace capacity and preventing contamination of the melt from falling scale. Contact CFC for application guidance and treatment frequency recommendations based on your furnace type and alloy.\n\n<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/details>\n\t\t\t\t\t<\/div>\n\t\t\t\t\t