The pyrite cinder (dry mine) is sieved through a 100 mesh sieve, and the sieved product is ground in a holding mill for 5 min, the grinding concentration is C=70%, stirred for 5-8 minutes, and then subjected to two-stage magnetic separation. The magnetic field strength is 2500 ohms and 3000 ohms respectively. One magnetic separation concentrate and two-stage magnetic separation concentrate are combined into the final concentrate. The second-stage magnetic separation tailings are re-elected on the shaker to obtain the middle and tailings respectively. . The process flow is shown in Figure 1. The table below shows the test results. Figure 1 Two-stage magnetic separation-shaker process flow chart Table 2 magnetic separation - shaker test product name Yield(%) grade(%) Recovery rate(%) Fe S Fe S Concentrate I 30.63 61.23 0.286 36.91 5.03 Concentrate II 12.39 63.22 0.272 15.41 1.94 Tailings 56.98 42.53 2.84 47.68 93.03 total 100 50.82 1.74 100 100 The results in the table show, the sulfur in the iron ore slag pretreated under the same conditions, with a two-stage magnetic separation - combined shaker test process, although possible to obtain high concentrate grade, 61.23%, and 63.22%, respectively, The content of S is also relatively low, and can be reduced to less than 0.3%, but the concentrate yield and recovery rate are not high. The cumulative yield of concentrate I+ concentrate II is 43.02%, and the cumulative recovery rate is 52.32%. Product advantages: Hotel Lock,Hotel Room Door Locks,Hotel Door Security Latch,Hotel Lock System Dongguan Kaisijin Intelligent Technology Co., Ltd , https://www.dgoemsmartlock.com
1. When guests stay in the store, they only need to register at the front desk, and after completing the procedures, they will get a valid stay time proximity card. The guest can open his room freely when he gets the key with the house number, without having to open the door through the waiter.
2. Guests can rest assured to put their items in the room when they go out, and when guests return to the hotel, they can open the square tongue when they move in the room. At this time, it is safer. The floor attendant cannot open the door lock without the guest's permission (available in unexpected situations) Emergency card opened);
3. The hotel can use the data card to extract the door opening record in the lock and print it out as evidence to judge the authenticity of the accident. The smart card key is a multi-encryption key, which overcomes the characteristics of mechanical keys that are easy to copy and not portable, and is safer and more reliable for the hotel and guests.
4. Scientific and scientific hotel management. There are more than ten types of hotel smart card management systems, with different function cards, which can conveniently implement hotel management and improve the economic benefits of the hotel.
5. People who are away from home will give priority to choosing hotels with good image, sense of security and convenience when staying; smart card door locks can provide guests with the above enjoyment, bringing a continuous source of customers to the hotel, in real life hotels There may be situations where the guest`s stay is overdue and the deposit is insufficient or the room escape fee is maliciously owed, causing both parties to be unhappy or even friction with the guest, which will cause economic losses to the hotel and affect the hotel`s reputation to a certain extent;
6. The "effective stay time" of the smart card door lock can solve this problem well and clear your worries. The smart card key issued to the guest by the smart card electronic lock of our store cannot be copied, and the confidentiality is strong. The guest opens the door by himself without having to go through the floor attendant, which can greatly reduce the staff expenses of the hotel attendant and the corresponding comprehensive expenses.
September 27, 2024