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TWO:But, to turn from this unpleasant episode of Beccarias life, Catharine II., soon after his return to Milan, invited him to St. Petersburg, to assist in the preparation of her intended code of laws. It would seem from one of Pietro Verris letters that Beccaria was at first inclined to accept the proposal,[15] but it is improbable that any such offer would really have tempted him to exchange Italian suns for Russian snows, even if Kaunitz and Firmian had not resolved to remove the temptation, by making his talents of service at home. This they did by making him Professor of Political Economy in the Palatine School of Milan, in November 1768; and his published lectures on this subject form the largest work he ever wrote.

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:The greatest effect that any punishment has upon the human mind is not to be measured by its intensity but by its duration, for our sensibility is more easily and permanently affected by very slight but repeated impressions than by a strong but brief shock. Habit holds universal sway over every sentient being, and as we speak and walk and satisfy our needs by its aid, so moral ideas only stamp themselves on our mind by long and repeated impressions. It is not the terrible yet brief sight of a criminals death, but the long and painful example of a man deprived of[172] his liberty, who, having become as it were a beast of burthen, repays with his toil the society he has offended, which is the strongest restraint from crimes. Far more potent than the fear of death, which men ever have before their eyes in the remote distance, is the thought, so efficacious from its constant recurrence: I myself shall be reduced to as long and miserable a condition if I commit similar misdeeds.
  • 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:
  • 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