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Portugal
الشخص الذي يمكن الاتصال به Nuno
Pé da Pedreira, Alcanede, Portugal, Other
Aluminium
Quicklime can be used as a component of continuous casting
lubricants, and slaked lime as a lubricant carrier in wire
drawing.
Continuous casting can also be used for materials based on
different types of metals, such as aluminium. Aluminium based
metals possess numerous desirable qualities and are used for a
number of different products such as food and drink cans, to the
construction of large international aeroplanes. Plastics Quicklime
reacts with any free water present to form hydrated lime. This
removes water from the system and can be useful when dealing with
products that are heated during the manufacturing process, such as
plastic. When making plastic, if any potential water is not removed
then steam bubbles may occur in the finished product, which can
affect its strength and appearance. Quicklime is therefore often
used in PVC and rubber manufacturing processes.
PVC itself is rated as one of the most valuable products in the
chemical industry, and throughout the world over *0% of PVC
manufactured is used for construction. As a building material PVC
is cheap, durable, cost effective and easy to assemble. The uses of
rubber range from household to industrial products, including the
eraser on the end of your pencil, to the tyres on your car. Paper
Lime can be used to make fillers and coating products which are
used within the paper industry. Hydrated lime is used in the
sulphate process during the manufacture of paper and pulp. Glass
Although limestone is generally more cost effective in the
production of glass, dolomitic and high calcium lime in finely
ground forms can also be used under specific circumstances. Burnt
lime often provides greater transparency to the glass than
limestone due to its lower content of organic matter.
The use of lime in the process also reduces the requirement for
expensive decolouriser additives. Iron and steel In many countries,
lime is used more for iron and steel making than for construction
and building. Most of the lime used is for removing impurities in
the basic oxygen steelmaking (BOS) process. The BOS process is now
used for *0% of the worlds steel production, with the remainder
being in electric arc furnaces (EAF). Soil stabilisation Although
widely known as Soil Stabilisation, there are a number of distinct
processes which can be carried out by the addition of quicklime to
waterlogged, clay bearing or contaminated land. Improvement is the
first process step, which is the drying out of water bearing
material by the heat generating reaction with quicklime, this also
converts some of the free water to hydrated lime. Using this
process, it is possible to convert an unworkable site into a solid
working platform providing a base for construction development, or
alternatively as a potential area for agricultural use. Aerated
concrete blocks Quicklime is mixed with cement, sand, water and
aluminium powder to give a slurry which rises and sets to form
honeycomb structured blocks which have excellent thermal and sound
insulation properties.
The heat generated when quicklime reacts with water and the
alkaline conditions combined with aluminium powder generates
hydrogen bubbles which cause the blocks to rise. The heat generated
subsequently causes the slurry to set. The blocks are then heated
in an autoclave, which promotes reactions between calcium and
silicates in the sand or PFA and gives extra strength. Dolomite
lime and/or modified quicklime can be added to reduce excessive
shrinkage or cracking, an issue which is increasingly useful for
highly stressed materials, such as busy road junctions. Mortar
Current cement-lime mixes provide the most efficient mix in regards
to possessing both good 'soft' properties as well as controlled
strength. The benefits of using lime and lime-cement mortars can be
divided into two categories; 'soft' and 'hard' characteristics.
They are as follows:
Soft characteristics:
بلد: | Portugal |
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سعر فوب: | أحصل على آخر سعر |
الموقع: | - |
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