TWO:��Thus was Silesia reunited to the dominions of Prussia. Two years of war sufficed for the conquest of this important province. The treasure which the late king had left was nearly exhausted. But it is a cheap purchase, where whole provinces are bought for seven or eight millions of crowns. The union of circumstances at the moment peculiarly favored this enterprise. It was necessary for it that France should allow itself to be drawn into the war; that Russia should be attacked by Sweden; that, from timidity, the Hanoverians and Saxons should remain inactive; that the successes of the Prussians should be uninterrupted; and that the King of England, the enemy of Prussia, should become, in spite of himself, the instrument of its aggrandizement. What, however, contributed the most to this conquest was an army which had been formed for twenty-two years, by means of a discipline admirable in itself, and superior to the troops of the316 rest of Europe. Generals, also, who were true patriots, wise and incorruptible ministers, and, finally, a certain good fortune which often accompanies youth, and often deserts a more advanced age.��70Voltaire was at this time in Brussels. Frederick wrote him from Wesel, under date of 2d September, 1740, giving a narrative of his adventures, partly in prose, partly in verse. It was a long communication, the rhyme very much like that which a bright school-girl would write upon the gallop. The following specimen of this singular production will give the reader a sufficient idea of the whole:

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:Between the two camps of the Austrians and Prussians, south of the River Neisse, there was a castle called Little Schnellendorf, belonging to Count Von Steinberg. It was a very retired retreat, far from observation. Arrangements were made for a secret meeting there between Frederick and General Neipperg, to adjust the details of their plot. It was of the utmost importance that the perfidious measure should be concealed from France. The French minister, Valori, was in the Prussian camp, watching every movement with an eagle eye. ��Frederick,�� writes Carlyle, ��knows that the French are false to him. He by no means290 intends to be romantically true to them, and that they also know.����To which I replied, that this was very hard usage, and the world would see how the King of Prussia would relish it. But having strict orders from his majesty, my most gracious master, to make a declaration to the ministers of Hanover in his name, and finding that Herr von Hartoff would neither receive it nor take a copy of it, I had only to tell him that I was under the necessity of leaving it in writing, and had brought the paper with me; and that now, as the council were pleased to refuse to take it, I was obliged to leave the said declaration on a table in an adjoining room, in the presence of Herr von Hartoff and other secretaries of the council, whom I desired to lay it before the ministry.

• 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:FREDERICK WILLIAM.��Yesterday, July 3d, the king sent for me, in the afternoon, the first time he has seen any body since the news came. I had the honor to remain with him in his closet. I must own I was most sensibly affected to see him indulging his grief, and giving way to the warmest filial affections; recalling to mind the many obligations he had to her late majesty; all she had suffered, and how nobly she had borne it; the good she did to every body;419 the one comfort he now had, that he tried to make her last years more agreeable.��

• 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