There are several types of recycling of glass products: as a casting with melting agent, transformation and utilization, back to the furnace recycling, raw material recovery and reuse, etc.
1, as a casting flux
Broken glass can be used as a casting steel and casting copper alloy melting flux, to cover the melt to prevent oxidation.
2、Transformation use
After the pre-treated broken glass is processed into small glass particles, it has various uses as follows.
The glass fragments as a combination of road surface, in the United States and Canada has been several years of experiments to confirm that the use of glass fragments as a road filler than with other materials have a reduction in the accident of the vehicle lateral slide over; light reflection appropriate; road wear and tear situation is good; snow melts quickly, suitable for use in places with low temperatures and other points.
Crushed glass is mixed with building materials to make building prefabricated parts, building bricks and other building products. Practice has proved that the organic substances used as a binder pressure molding products of higher dimensional accuracy and strength, low production costs.
Crushed glass is used to manufacture building surface decorations, reflective sheet materials, arts and crafts and clothing with accessories, with beautiful visual effects.
Glass and plastic waste and construction materials can be made from a mixture of synthetic building products.
3、Recycle back to the furnace
The recycled glass is pretreated and then melted back into the furnace to make glass containers, glass fiber, etc.
4、Reuse of raw materials
The recycled broken glass is used as an additional raw material for glass products, because the right amount of added broken glass helps the glass melt at a lower temperature.
5, reuse of glass bottles, packaging reuse range mainly for low-value large amount of commodity packaging glass bottles. Such as beer bottles, soda bottles, soy sauce bottles, vinegar bottles and some cans bottles.
Precautions
The glass container industry uses approximately 20% of the crushed glass in the manufacturing process to facilitate fusion and mixing with raw materials such as sand, limestone and Seventy-five percent of the crushed glass comes from the manufacturing process of glass containers and 25% from post-consumer volumes.
Waste glass packaging bottles (or crushed glass material) for glass products for reuse of raw materials, should pay attention to the following issues.
1, fine selection to remove impurities
In the glass bottle recycling material must be removed impurities metal and ceramic and other debris, this is because the glass container manufacturers need to use high-purity raw materials. For example, in broken glass there are metal caps and other oxides that may form to interfere with the operation of the furnace; ceramics and other foreign substances are formed in the production of containers defects.
2, color selection
Recycling color is also a problem. Because colored glass can not be used in the manufacture of colorless flint glass, and the production of amber glass is only allowed to add 10% of green or flint glass, therefore, after the consumption of broken glass must be manually or machine color selection. Broken glass that is used directly without color picking can only be used to produce light green glass containers.
Post time: Dec-10-2022