The proximal end of the ulna articulates with the trochlea of the humerus. To enable movement at the elbow joint, the ulna has a specialised structure, with bony prominences for muscle attachment. Important landmarks of the proximal ulna are the olecranon, coronoid process, trochlear notch, radial notch and the tuberosity of ulna: 1  Olecranon â A large projection of bone that extends proximally, forming part of trochlear notch. 2  Coronoid process â This ridge of bone projects outwards anteriorly, forming part of the trochlear notch.
Metallurgical coke is produced by the destructive distillation of coal in coke ovens. Prepared. coal is heated in an oxygen-free atmosphere (âcokedâ) until most volatile components in the coal are. removed. The material remaining is a carbon mass called coke. Metallurgical coke is used in iron and steel industry processes (primarily in blast furnaces) to. reduce iron ore to iron. Over 90 percent of the total coke production is dedicated to blast furnace. operations.
Petroleum coke, or pet coke, has been produced since the 1930s. It serves as a valuable and essential commercial product that is used directly in a wide range of applications, including the manufacturing of aluminum, steel, glass, paint, and fertilizers.aint and Colorings. Petcoke is used in the production of titanium dioxide (TiO2), a mineral that is used as a substitute for lead in paint. It is also a pigment in sunscreen, plastic and food coloring.