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TWO:The air is heavy with indefinable perfume. We are already coasting the Indian shore, but it remains invisible, and gives no sign but by these gusts of warmer air laden with that inscrutable aroma of musk and pepper. A lighthouse to port, which we have for some time taken for a star, vanishes in the light mist that hangs over the coast, and then again there is nothing but the immensity of waters under the clear night, blue with moonlight.

Hydrocyclone (liquid cyclone)01

Hydrocyclone (liquid cyclone)02

A hydrocyclone (liquid cyclone) injects treatment solution into stationary equipment to perform separation, classification, and concentration, and is an innovative separator with a very simple structure and no drive unit.

Structure of a hydrocyclone (liquid cyclone)

A suspension containing fine particles of several micrometers or more is supplied to a cylindrical container circumferentially at high speed. And as a result it starts to rotate and a centrifugal force is generated. At this time a gravitational acceleration of several tens of thousands of G is generated in the circumferential direction, and thus leading to fast sedimentation and concentration of the fine particles. The separated concentration can be freely selected by changing the supply rate (supply pressure and flow rate) and the flow ratio of the outlet. Our hydrocyclone (liquid cyclone) was designed and manufactured to classify and concentrate fine particles, and so has a small element.

THREE:From Kusshalgar we were travelling in a tonga once more. The landscape was all of steep hills without vegetation; stretches of sand, hills of claylilac or rosy brick-earth scorched in the sun, green or brown earth where there had been recent landslips, baked by the summer heat to every shade of red. There was one hill higher than the rest, of a velvety rose-colour with very gentle undulations, and then a river-bed full of snowy-white sand, which was salt.
  • Equipment costs can be reduced.
  • Operating costs can be reduced.
  • Maintenance costs can be reduced.
  • Any change in raw material and product can be easily addressed.
  • Large amounts can be treated in a small area.
  • Separation and cleaning are easy because of the simple structure.
  • Simplified control
  • This equipment can be operated in synchronization with external devices.
  • Alarm and interlock mechanism.
THREE:The fort of Allahabad, the fort of the mutiny of 1857, is a complete citadel where, in the thickness of the walls, behind screens of acacia trees, lurk doors into palaces. Among the gardens there are clearings full of guns and ambulance waggons, and enormous barracks and huts for native soldiers. Then on the ponderous stonework of the ramparts rise little kiosks in the light Hindoo-Mussulman style, elaborate and slender, built by Akbar the [Pg 183]conqueror, who took Prayag and razed it, to build on the site a city dedicated to Allah. And now modern architecture is slowly invading it, adding to the flat walls which hide under their monotony the gems of stonework with their elegant decoration.The rice, lately sown, was sprouting in little square plots of dazzling green; it was being taken up to transplant into enormous fields perpetually under water. All the "paddy" fields are, in fact, channelled with watercourses, or if they are on higher ground, watered from a well. A long beam is balanced over the mouth of the well, and two boys run up and down to lower and raise the bucket; a man tilts the water into the runlets out of a large vessel of dusky copper, or perhaps out of a leaky, dripping water-skin.
  • Classification and concentration for the manufacture of inorganic powder materials
  • Classification of ceramic materials
  • Removal of fine particles, including iron powder
  • Removal of fine particles from pigments
  • Removal of fine organic particles from solvents
  • Separation of starch and yeast
  • Removal of fine particles from high-temperature strong acid solutions
  • Removal of fine particles from low-temperature solutions