MCQs: Work index is the gross energy (kWh/tonne of feed) necessary to reduce a very large feed to such a size that 80% of product particles will pass through a 0.1 mm screen. The value of work index determined for wet grinding should be multiplied with _____ to get the same for dry grinding?
Length/diameter ratio of a ball mill is. A. 1.5. B. 1. C. 1. D. 1. Answer: Option C
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Question is ⇒ Length/diameter ratio of a ball mill is, Options are ⇒ (A) 1.5, (B) 1, (C) 1, (D) 1, (E) , Leave your comments or Download question paper
Explanation: The tube mill is similar to ball mill in the construction and operation and the ratio of length to diameter is 3 or 4:1
Gives finer size reduction but consumes more power. Has larger length/diameter ratio ( 2 as compared to 1 for ball mill) All (A), (B) and (C) View answer. Correct answer: (D) All (A), (B) and (C) 43. A tube mill compared to a ball mill. Has a higher length/diameter ratio
Description: This is a Most important question of gk exam. Question is : A tube mill as compared to a ball mill , Options is : 1. gives finer size reduction but consumes more power., 2. employs smaller balls. , 3.all (, ( and (., 4. has larger length/diameter ratio ( 2 as compared to 1 for ball mill). , 5. NULL
Oct 26, 2017 Oct 26, 2017 Ball mill shape factors in the period prior to 1927 averaged 1.1/1 for 29 center discharge mills and 1.0/1 for 30 peripheral discharge mills. With the resumption of new plant construction after the 1930’s depression, the Morenci concentrator continued the 1/1 ratio with its 3.1 x 3.1 m (10 x 10 ft) mills. The ratio was increased progressively from then on, reaching 1.6 and 1.8/1 for the largest overflow mills currently
Dec 16, 2015 Dec 16, 2015 As a result, the largest rod mill manufactured measures fifteen feet diameter and is 21 feet in length. Source: Lewis, Coburn, and Bhappu For most applications, 70:1 is the maximum practical reduction factor (ratio) for a ball mill, but 60:1 represents typical design practice
Mechanical Operations Mcqs for Preparation of Fpsc, Nts, Kppsc, Ppsc, and other test. Skip to content. Home; About Us; ... Length/diameter ratio of a ball mill is _____ ? 0. A. 1.5 B. 1 ... In a size reduction crushing operation, feed size is 100 to 300 mm. while the product size is 10 to 50 mm
Mar 27, 2017 Size Reduction is an important mechanical operation carried out in Mineral Processing industries. Crushers, Ball Mills and Grinding mills are employed for various size reduction applications. This Size Reduction Quiz module helps to test your knowledge in basics, applications of various equipment’s and associated separation and conveying systems
Learn Mechanical Operations MCQ questions & answers are available for a Chemical Engineering students to clear GATE exams, various technical interview, competitive examination, and another entrance exam. Mechanical Operations MCQ question is the important chapter for a
Jul 30, 2021 Related Mcqs: Length/diameter ratio of a ball mill is _____ ? A. 1.5 B. 1 C. 1 D. 1... For transporting pasty material, one will use a/an_____?