2012年(464)
分类: Delphi
2012-08-03 17:01:30
The raw materials used in cement production are widely available in great
quantities. Limestone, marl, and chalk are the most common sources of calcium in
cement (converted into lime through calcination). Common sources of silicon
include clay, sand, and shale. Certain waste products, such as fly ash, can also
be used as a silicon source. The iron and aluminum can be provided as iron ore
and bauxite, but recycled metals can also be used. Finally, about 5% of cement
by weight is gypsum, a common calcium- and sulfur-based mineral.
In the segment,
Kobleco said it had seen a recovery in North America as well as Japan and South
East Asia. "However, due to changes in the types of cranes sold, consolidated
segment sale4s in the first quarter of fiscal 2012 decreased -19.3%," it
added.
The water, sand, and gravel or used in
concrete production in addition to s
are also abundant. With all of these raw materials, the distance and quality of
the sources have a big impact on transportation energy use, water use for
washing, and dust generation. Some aggregates that have been used in concrete
production have turned out to be sources of radon gas. The worst problems were
when uranium mine tailings were used as cocrete aggregate, but some natural
stone also emits radon. If concerned, you might want to have the aggregate
tested for radon.
The fall in both divisions' revenues had an impact on
operating profit, which fell from JPY 10.7 billion (US$ 137 million) for the
first quarter last year to JPY 3.5 billion (US$ 45 million) this year. Kobelco
Cranes operating loss was steady at JPY 400 million (US$ 5.1 billion), while
profits of Kobelco Construction Machinery fell -65% to JPY 3.9 billion (US$ 50
million).
Ore crushing plant and gold mining equipment are both used for
extraction of mineral materials. Crushing is essential process.
Despite these
falls in revenues, Kobelco predicts that sales over the course of the year will
be more or less level with last year. Revenues are expected to be unchanged at
JPY 354 billion (US$ 4.53 billion), although operating profits are set to more
than halve from JPY 22.9 billion (US$ 293 million) last year to JPY 9.5 million
(US$ 122 million) this year.
Hongxing is a mining equipment manufacturer in
China, and supplies all kinds of crushing plant for coal, cement, concrete, ore,
gold etc. Our products have taken up a considerable place in the world market.
They have been exported to America, Italy, Iran, Australia, India, Indonesia,
UAE, South Africa etc and received high popularity.