Back in the early 1950s, foreign R & D had a high frequency vibration sieve. In the metallurgical industry, as a concentrator fine iron ore grading; coal processing for slime dehydration, referral and classification. At present, foreign countries have the technology in the United States, Australia, Germany, France and Finland. Its products are also showing diversification, Schechita SLV type high-frequency vibration sieve dehydration,the Nord berg HF high frequency vibrating screen.From the accessible literature, the foreign high-frequency vibration sieve vibration parameters are a big difference, together, the vibration frequency 24 ~ 60Hz, the vibration strength is 5 ~ 11gn. Foreign production of high-frequency shaker has a handling capacity of large, high efficiency, stable performance, longer life expectancy, etc., but the disadvantages are expensive, a small amount of processing, cost is no thigher, at present, its largest span of only 1.8m. Although the foreign high-frequency shaker different models, but the principle is basically similar. One of the most typical American Derrick high frequency, the following screen, Weier Ke Dewatering Screen and SD-type high-frequency vibration sieve to be a brief analysis.
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