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Assume that you are a project engineer in a minerals refining plant. On this particular day, your line manager surprises you on arrival at work and presents you with the attached sketch (Figure 1. below) of a proposed design for a particulate feed chute for delivery of hot materials into a rotating kiln – service conditions as indicated. On this design, your manager has to make a presentation to senior directors later in the day and has requested that you suggest a number of options on materials for the fabrication of the chute and fixtures. Therefore: (i) Outline the parameters/criteria that you need to consider for the materials selection. (ii) Using the details determined in (i), suggest 3 (three) possible material choices for the chute and fixtures. List the advantages and disadvantages of each choice and rank them in order of preference.

PLATE FIXTURES FOR CHUTE MINERAL FEEL HOPPER Refraczony LINEO STEEL SHELL TEMP RANGE 750°> 950°C TEMP RANCE S sol - 750°C PROPANE GAS > FUELLED FLAME ROTATING KILN (REFRACTORY LINED) FEED CHUTE Approx 6MTR CONC. 350mm OD. WALL THICK MINERAL FEED. SODIUM CARBONATE 50% ALUMINA (ALUMINIUMİ OX:06) 50% Sodium HYDROXIDE (TRACE) Is um