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Full-counterflow heat exchange two-section type casting waste sand roasting furnace

A kind of casting waste sand, two-stage technology, which is applied in casting molding equipment, manufacturing tools, machinery for cleaning/processing of casting materials, etc. Stability and other issues, to achieve high production efficiency, beneficial to resources and environmental protection, and good quality.

Active Publication Date: 2011-07-20
CHONGQING CHANGJIANG RIVER MOLDING MATERIAL GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the existing roasters generally have defects such as high energy consumption, difficult control of roasting quality, unstable product quality, small processing capacity, inability to adapt to various types of waste sand, high labor intensity of operators, and poor environment.

Method used

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  • Full-counterflow heat exchange two-section type casting waste sand roasting furnace
  • Full-counterflow heat exchange two-section type casting waste sand roasting furnace
  • Full-counterflow heat exchange two-section type casting waste sand roasting furnace

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Embodiment one: see figure 1 , figure 2 and Image 6 A full countercurrent heat exchange two-stage casting waste sand roasting furnace is shown, comprising an upper furnace body 3 positioned and connected to a steel frame 4, a lower furnace body 6 positioned and connected to a base 10, and a furnace body 6 positioned on the top of the upper furnace body. The exhaust port 2, the sand adding device 21 and the sand adding pipe 1, the sand collection bucket 22 arranged at the junction of the upper furnace body and the lower furnace body, the three burners 18 arranged on the upper part of the lower furnace body, and the lower furnace body The three burners 7 in the upper part of the body, the air inlet 17 arranged at the lower part of the lower furnace body, the lower sand collection bucket 13 arranged at the bottom of the lower furnace body and the sand feeding cooling pipe 16 and the sand outlet 14 connected thereto;

[0026] A pneumatic sand separator 20 is set in the ...

Embodiment 2

[0033] Embodiment two: see image 3 The furnace walls of the upper furnace body 3 and the lower furnace body 6 of this example are all made of steel plates, heat-insulating fibers, and heat-resistant stainless steel plates from the outside to the inside. The diameter of the upper furnace body 3 is equal to the diameter of the lower furnace body 6. The upper furnace body The furnace body and the lower furnace body are directly connected as one, and temperature sensors 24 are respectively arranged on the upper furnace body and the lower furnace body, and the rest are the same as in the first embodiment. The furnace body with such a structure has good heat insulation and heat preservation performance and long service life, which is beneficial to improve the utilization rate of heat energy in the furnace and realize maintenance-free.

[0034]When the present invention works, foundry waste sand is added from the sand feeding pipe in the upper section of the furnace body with a cert...

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Abstract

The invention discloses a full-counterflow heat exchange two-section type casting waste sand roasting furnace which comprises an upper-section furnace body, a lower-section furnace body, a sand adding device arranged at the top of the upper-section furnace body, a sand collecting hopper arranged at the junction of the upper-section furnace body and the lower-section furnace body, a burning machine, a burner, an air inlet, a lower sand collecting hopper and a sand outlet, wherein the burning machine, the burner and the air inlet are arranged on the lower-section furnace body, and the lower sand collecting hopper and the sand outlet are arranged at the bottom of the lower-section furnace body; and a pneumatic sand separator is arranged at the upper part of the upper-section furnace body, anin-furnace heat exchange device is arranged in the lower part of the lower-section furnace body, a temperature sensor is arranged on the lower-section furnace body, or the temperature sensors are arranged on the upper-section furnace body and the lower-section furnace body respectively, and the sensed data output end is connected with a data processing system connected outside of the furnace. Thefull-counterflow heat exchange two-section type casting waste sand roasting furnace has the following advantages: the waste sand processing range is wider, and the production efficiency is high; the temperature of the roasting furnace is moderate, and reclaimed sand is better in quality and stable; and the heat exchange efficiency in an in-furnace system is high, the burning heat utilization of organic matters and carbon in waste sand is good, and the roasting furnace is further conductive to protecting resources and is environment-friendly.

Description

technical field [0001] The invention relates to a roasting furnace, in particular to a two-stage full countercurrent heat exchange casting waste sand roasting furnace. Background technique [0002] The reuse of foundry waste sand in the foundry industry has been valued by countries all over the world, but due to the wide variety of foundry waste sand, its recycling technology is facing great challenges. Foundry waste sand contains quartz sand or a variety of ceramsite sand and a variety of inorganic substances, and also contains a variety of metal oxides, metal alloy dust and aggregates, organic binders and other organic additives (mainly various resins, Curing agent, curing accelerator, plasticizer, etc.), elemental carbon, inorganic binder (mainly inorganic substances of aluminum-silicon series elements and their modified products, such as bauxite, kaolin, attapulgite , etc.) mixture. This kind of mixture with various physical properties has various physical and chemical...

Claims

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Application Information

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IPC IPC(8): B22C5/00
Inventor 熊鹰
Owner CHONGQING CHANGJIANG RIVER MOLDING MATERIAL GRP
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