• SORG supplies
• Glass melting
• The melting technology
• The furnaces
• Systems and equipment
• Glas conditioning
• The conditioning technologies
• The forehearth systems
• Systems and equipment for distributors and forehearths
• Emhart Glass forehearths
• Systems for special applications

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Furnace systems and equipment

All our conventional furnaces can be equipped with one or more additional systems to improve operation. Typical additional systems for our furnaces include:

SORG Deep Refiner® (SDR)

The SDR was invented by SORG (first patent application 1974) and we have by far the most experience with this system.

The SDR is a deeper area immediately before the throat, which increases the glass residence time and thereby offers a number of advantages. More time is available for readsorption of gases and so general glass quality and microhomogeneity of the glass is improved, the furnace becomes less susceptible to disturbance if unmelted batch reaches the front wall, and the temperature of the glass entering the throat is reduced.

Boosting systems

We have already supplied more than 500 electric boosting systems of all types.

Melting boosters are installed to add energy to the melting area and increase the melting rate. The installed power of SORG melting boosters usually lies within the range 300 – 2400 kVA. Barrier boosters are designed to strengthen the convection currents in the furnace whilst also providing a small increase in the melting rate. Such installations usually have an installed power of 600 – 1200 KVA. The throat booster is used to add energy to the throat and riser area at times of low or zero pull, to ensure that these areas do not become too cold.

Bubbler systems

SORG has supplied bubbler systems for many types of glass, ranging from typical soda-lime compositions to basalt-based mineral for the production of stonewool.

A bubbler system installed as one or two rows of bubblers across the furnace at the hot-spot helps to strengthen the furnace convection currents and produces a physical barrier to prevent batch piles swimming too far forward on the glass bath surface. We use cermet or ceramic bubbler tubes, with the option to use a platinum tip in special glasses.

SORG equipment

The design and specification of SORG equipment are based on our many years of experience of the difficult operating environment on and around the furnace.

We can supply most items of equipment for the heating and cooling systems, the furnace pressure and waste gas systems, monitoring and control systems, temperature and glass level measurement systems. Although much of the equipment is supplied as part of a furnace contract all items are also available individually.