An autoclave system for the production of phosphogypsum autoclaved bricks

Abstract

The invention discloses a still kettle system for producing ardealite steam-pressing bricks. The still kettle system comprises a heat main steam source collecting box, a still kettle A, a still kettle B, a still kettle C, a still kettle D, a still kettle E, a steam source distribution pipe, a dead steam distribution pipe, a steam-steam pumping pipe A, a steam-steam pumping pipe B, a steam-steam pumping pipe C, a steam-steam pumping pipe D and a steam-steam pumping pipe E, wherein the main steam source collecting box is connected with the steam source distribution pipe through a steam source main valve A and a steam source main valve B; inlets of the still kettle A, the still kettle B, the still kettle C, the still kettle D and the still kettle E are connected with the steam source distribution pipe and the dead steam distribution pipe; outlets of the still kettle A, the still kettle B, the still kettle C, the still kettle D and the still kettle E are connected with the steam-steam pumping pipe A, the steam-steam pumping pipe B, the steam-steam pumping pipe C, the steam-steam pumping pipe D and the steam-steam pumping pipe E. Dead steam of the still kettles are subjected to temperature rise and pressure rise respectively through the steam-steam pumping pipes and then is gathered into the dead steam distribution pipe, therefore the dead steam can be recycled instead of being discharged, the recycling effect is better, and the maximum recycling and reusing purposes are achieved.

Description

technical field [0001] The invention belongs to the technical field of energy-saving and environment-friendly production of building materials, and in particular relates to an autoclave system for producing phosphogypsum autoclaved bricks. Background technique [0002] With the rapid development of phosphating enterprises, the phosphogypsum waste produced by the production of phosphoric acid will increase year by year. The open-air storage of waste residue not only occupies land, but also poses environmental risks. The state should gradually restrict and eventually ban the use of solid clay bricks, promote the application of new technologies and new products of energy-saving and waste-saving new wall materials, and promote energy conservation and consumption reduction in the new wall material industry. This shows that the national level has begun to restrict and prohibit the use of solid clay bricks. The research on the comprehensive utilization of phosphogypsum in my count...

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Problems solved by technology

At present, the progress is relatively smooth, and it has been solved that phosphogypsum bricks have poor water resistance and acid corrosion resistance, low strength, large shrinkage, but high energy consumption and low added value still exist. However, considering the comprehensive economic benefits of the enterprise, As well as the needs of survival and development, it is still very attractive. Therefore, domestic large-scale phosphate fertilizer companies are stepping up efforts to develop their own

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