Paper cord,
Paper Rope,Colorful Twisted Paper Cor,Thick Twisted Paper Cord,Brown Color Twisted Paper Rope DongGuan FeiYang Packaging Machinery Equipment Co., Ltd , https://www.feiyang-machinery.com
Product description:
Twisted Paper Cord is use of high-quality pure wood pulp paper production, into a single round, commonly used specifications: diameter 1.0mm-5.5mm between
Twisted Paper Cord Finished shape:
1, according to the length of the customer cut into a strip or processed into Paper Bag handle;
2, rewinding into a coil-like (conventional standards: 3mm 5000 m / roll, 3.5-4mm, 3500 m / volume), can also be adjusted according to customer requirements for each volume of rice, for automatic bag machine, hand-cranked machine use.
After years of practice, the service life of the mine should be determined on the basis of economic rationality, as shown in Table 1.
Table 1 Reasonable service years of different types of mines
Mine type
Annual output of ore (10,000 tons)
Mine service life (a)
Ferrous metals
Non-ferrous metal
Large
More than 100
More than 100
30 or more
Medium
30~100
20~100
20 or more
Small
30 or less
20 or less
10 to 15 or more
When the deposit is fixed, the annual relationship, the service life of the mine and the deposit Q of the mine have the following relationship:
A=(Q/t 1 )[P/(1-Ï)]
Where A-year production, t/a;
Q-mineral reserves, t;
P-ore recovery rate, %;
æ··-waste stone mixing rate, %;
t 1 - Calculates the service life.
The calculation service life of the mine does not take into account the fact that production at the beginning and end of production does not reach normal production capacity. Therefore, the actual service life of the mine is always longer than the calculated service life t 1 , and the growth time is generally 1 to 5 a.