jurnal jaw crusher dan roll crusher pdf

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Global aggregate market and trends, the global demand for sand is growing.It is estimated that the global production of sand and gravel is about 50 billion tons. Based on the world's total population of 7.7 billion, the per capita consumption of sand and gravel is about 6.5 tons.By region, Asia accounts for 66% of the world's sandstone production. Looking forward to 2030, the global sand industry trend is still positive.Population growth (estimated 8.5 billion population in 2030), economic development and global urbanization (estimated to reach 60% in 2030) will jointly promote the growth of sand and gravel industry, and global sand and gravel output is expected to reach 60 billion tons in 2030.

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