Abstract: This invention relates to apparatus for thermally de-coating and/or drying coated and/or contaminated materials. The apparatus comprises at least one support, an oven (10) mounted to each support and adapted for receiving material to be treated: each oven (10) being moveable between a first position in which a first portion (4) is generally higher than a second portion (6) and a second position in which the second portion (6) is generally higher than the first portion (4) and in use, the or each oven (10) is repeatedly moved between first and second positions to move material within the oven. The apparatus including at least one afterburner (22) for generating a stream of hot gasses and conduit means for directing the stream of hot gasses into a treatment zone of the oven and exhaust means for returning the gasses to the at least one afterburner whereby the or each oven does not include an integral afterburner.

Abstract: An apparatus for thermally de-coating and/or drying coated and/or contaminated materials comprises a support and an oven pivotally mounted to the support. The oven has charging portion for receiving material to be treated and a changeover portion. Incorporated within the changeover portion is a heat treatment chamber through which a stream of hot gases can be passed. The oven is pivotally moveable between a first position in which the changeover portion is higher than the charging portion and a second position in which the charging portion is higher than the changeover portion. The arrangement is such that the oven can be repeatedly moved between the first and second positions so that material within the oven falls from one portion to the other portion, passing through the stream of hot gasses in the heat treatment chamber. A method of using the apparatus is also disclosed.

Abstract: This invention relates to apparatus for thermally de-coating and/or drying coated and/or contaminated materials. The apparatus comprises at least one support, an oven (10) mounted to each support and adapted for receiving material to be treated: each oven (10) being moveable between a first position in which a first portion (4) is generally higher than a second portion (6) and a second position in which the second portion (6) is generally higher than the first portion (4) and in use, the or each oven (10) is repeatedly moved between first and second positions to move material within the oven. The apparatus including at least one afterburner (22) for generating a stream of hot gasses and conduit means for directing the stream of hot gasses into a treatment zone of the oven and exhaust means for returning the gasses to the at least one afterburner whereby the or each oven does not include an integral afterburner.

Abstract: This invention relates to apparatus for de-coating and/or drying coated and/or contaminated materials. The apparatus comprising a support: and an oven (10) mounted to the support for receiving material to be treated. The oven (10) maybe moved between a first position in which a first portion is higher than a second portion, and a second position in which the converse is true. In use, the oven can be repeatedly moved between the first and second positions so material falls from one portion to the other portion.

Abstract: An apparatus for thermally de-coating and/or drying coated and/or contaminated materials comprises a support and an oven pivotally mounted to the support. The oven has charging portion for receiving material to be treated and a changeover portion. Incorporated within the changeover portion is a heat treatment chamber through which a stream of hot gases can be passed. The oven is pivotally moveable between a first position in which the changeover portion is higher than the charging portion and a second position in which the charging portion is higher than the changeover portion. The arrangement is such that the oven can be repeatedly moved between the first and second positions so that material within the oven falls from one portion to the other portion, passing through the stream of hot gasses in the heat treatment chamber. A method of using the apparatus is also disclosed.

Abstract: An apparatus for thermally de-coating and/or drying coated and/or contaminated materials comprises a support and an oven pivotally mounted to the support. The oven has charging portion for receiving material to be treated and a changeover portion. Incorporated within the changeover portion is a heat treatment chamber through which a stream of hot gasses can be passed. The oven is pivotally moveable between a first position in which the changeover portion is higher than the charging portion and a second position in which the charging portion is higher than the changeover portion. The arrangement is such that the oven can be repeatedly moved between the first and second positions so that material within the oven falls from one portion to the other portion, passing through the stream of hot gasses in the heat treatment chamber. A method of using the apparatus is also disclosed.

Abstract: An oven (10) has a rotatable portion (12, 14) comprising an outer chamber (20) and an inner treatment chamber (22) within the outer chamber. The inner treatment chamber is adapted to receive material for treatment and the oven has means (28, 32, 34, 36, 38, 42) to heat the inner treatment chamber externally. Preferably, the inner treatment chamber is heated by means of a flow of hot gases through the outer chamber, which passes over the external surfaces of the walls of the inner treatment chamber. The oven may also include means (44, 48) for introducing a flow of hot gasses through the inner treatment chamber. The flow rate of the hot gasses passing through the inner and outer chambers can be varied according to the nature of the material being treated. The oven is particularly suited to thermally de-coating scrap materials.

Abstract: An oven (10) has a rotatable portion (12, 14) comprising an outer chamber (20) and an inner treatment chamber (22) within the outer chamber. The inner treatment chamber is adapted to receive material for treatment and the oven has means (28, 32, 34, 36, 38, 42) to heat the inner treatment chamber externally. Preferably, the inner treatment chamber is heated by means of a flow of hot gases through the outer chamber, which passes over the external surfaces of the walls of the inner treatment chamber. The oven may also include means (44, 48) for introducing a flow of hot gasses through the inner treatment chamber. The flow rate of the hot gasses passing through the inner and outer chambers can be varied according to the nature of the material being treated. The oven is particularly suited to thermally de-coating scrap materials.

Abstract: An apparatus for thermally de-coating and/or drying coated and/or contaminated materials comprises a support and an oven (10) pivotally mounted to the support. The oven has charging portion (12) for receiving material to be treated and a changeover portion (14). Incorporated within the changeover portion is a heat treatment chamber (16) through which a stream of hot gasses (15) can be passed. The oven is pivotally moveable between a first position in which the changeover portion is higher than the charging portion and a second position in which the charging portion is higher than the changeover portion. The arrangement is such that the oven can be repeatedly moved between the first and second positions so that material within the oven falls from one portion to the other portion, passing through the stream of hot gasses in the heat treatment chamber. A method of using the apparatus is also disclosed.

Abstract: In an industrial furnace used to melt glass batch or glass melt least two oxy-fuel burners are employed in the roof or side-wall of the furnace. At least one oxy-fuel burner is operated with a fuel-rich mixture and at least one other oxy-fuel burner is operated with a fuel-lean mixture. The flames are directed to intersect near the surface of the batch or the melt in order to substantially complete combustion in the vicinity of the melt thereby increasing heat transferred to the material to be melted while also reducing flame temperatures near the burner block. Axisymmetric burners are employed in the crown or roof while non-axisymmetric burners are employed in the side-wall of the furnace. Alternatively, curved burners could be employed in either location to enhance control of the respective fuel-rich and fuel-lean flame interaction.

Abstract: A furnace having sidewalls to form an enclosure to contain a melt. One or more burners are positioned to fire into the enclosure to maintain the melt and one or more charge wells are separated from the enclosure by the sidewalls. A charge of material to be melted is loaded into the charge wells and melted. Submerged openings defined in the sidewall circulate melt to the charge well(s) and to circulate the melt back to the enclosure. Submerged pumps effectuate the circulation. Flue gas openings defined in the sidewall(s) are configured to direct flue gas into the charge well(s) and on to said the charge of material. Two opposed charge wells and pumps may be provided as wells as flue gas openings to heat the charge of material deposited into the charge wells. The flue gas openings allow flue gas to impinge onto the charge of material to be melted so that heat that would otherwise be lost in the flue gas is used to help melt the charge of material.