Job Recruitment Website - Recruitment portal - What do you mean by washing sand?
What do you mean by washing sand?
Sand washing, river sand, building sand, low-carbon environmental protection sand washing.
River sand resources are extremely rich, the water quality in the river is clear without industrial pollution, and the soil content and impurity quality are very small.
River sand is mainly alluvial sand with grayish white-grayish yellow color, which is composed of medium fine sand, medium coarse sand, coarse sand, gravel layer and gravel layer. Its occurrence is along the river bed, and the surface layer inclines from the river bank to the river bed, and tends to incline from upstream to downstream. The apparent density of river sand is 2580kg/m3? Bulk density? 1569kg/3m fineness modulus 2.89, medium sand silt content 1.34%. Hard texture and clear color make it a good building material.
The specifications of river sand are 4-8 mesh, 8- 16 mesh, 16-30 mesh, 30-60 mesh, 40-70 mesh, 70- 100 mesh, etc.
Washed sand is the raw sand for casting after natural silica sand is washed and classified, and its mud content (mass fraction) is ≤ 1.0%. See GB/T 9442- 1998 for details.
- Previous article:Is it easy to get into the third company of Guangzhou Aviation Administration?
- Next article:Brief introduction of Yiling hospital
- Related articles
- Is Founder Mould the No.1 in Zhejiang?
- What is the treatment of Wuxi Jin Shuo Machinery Factory?
- Is there any subsidy for Yantai Oriental Electronic Heterodyne?
- Is it necessary for enterprises to organize employees to conduct online training? Training? Which is better?
- Fuqing TPV technology evaluation. What is the minimum monthly salary for general workers in Man Qin?
- Registration materials of institutions in Tianmen City, Hubei Province in 2023
- How about Fujian Xinlongma Automobile Co., Ltd.?
- Full name of agricultural bank account opening bank
- Ask for some good-looking cartoons (introduction)
- How about Tangshan Pinzhi Human Resources Co., Ltd.?