There are several volumetric methods for assaying lead ores, but the best known is that based on the precipitation of lead by ammonium molybdate in an acetic acid solution.
A treatise on the art of testing, as in assaying metals, etc.
The method of assaying ore used by mining people, differs from smelting only by the small amount of material used.
The colour of the fumes which the ore emits after being placed on a hot shovel or an iron plate, indicates what flux is needed in addition to the lead, for the purpose of either assaying or smelting.
In this place I ought not to omit mention of another method of assaying employed by some assayers.
In shape, they may be round or rectangular, the latter shape being more suited to assaying ores.
This plan of cupellation which we have just described is still adopted in many continental works in the assaying of silver-lead ores.
This process of assaying or refining is similar in every respect to the former, and is often performed in the same furnace, the cupel being first of all brought to almost a bright red heat, when about 600 lbs.
There are three ways of assaying silver ores; they are in the test assay as follows:-- 1.
The following method of assaying is adopted in several large Continental establishments, where the ores have, beside the usual earthy matter and the sulphides of lead, an admixture of zinc, iron, and copper.
The assayingof the genuine ores is performed in the following manner; that is, if they contain but little earthy matter.
Illustration] Chapter First How Denneys Found Sir Launcelot, and How Sir Launcelot Rode Forth for to Rescue Queen Guinevere from the Castle of Sir Mellegrans, and of What Befell him upon the Assaying of that Adventure.
And if the human body has any natural method of assaying nutritional content, it is flavor.
Pottenger earned his daily bread performing a rather simple task, assaying the potency of adrenal hormone extracts.
In many ways, for many years hath the Devil been assaying to Extirpate the Kingdom of our Lord Jesus here.
Next, we have had many Adversaries of our own Language, who have been perpetuallyassaying to deprive us of those English Liberties, in the encouragement whereof these Territories have been settled.
The most complete and practical manual on everything which concerns assaying of all which have come before us.
Revised, Corrected, and considerably Enlarged, with a chapter on the Assaying of Fuel, &c.
When treating "pacos," or earthy chlorides of silver, assaying only 20 oz.
Revised, Corrected, and considerably Enlarged, with a chapter on the Assaying of Fuel, etc.
The use of metals in this rude state was attended with two very considerable inconveniences; first, with the trouble of weighing, and secondly, with that of assaying them.
The operation of assayingis still more difficult, still more tedious; and, unless a part of the metal is fairly melted in the crucible, with proper dissolvents, any conclusion that can be drawn from it is extremely uncertain.
The operation of assaying is still more difficult, still more tedious; and, unless part of the metal is fairly melted in the crucible, with proper dissolvents, any conclusion that can be drawn from it is extremely uncertain.
In assaying lead ores very poor in silver the best quantity to be taken for cupellation is 500 gr.
Metallurgists avail themselves of this method in assaying and refining the precious metals and procuring antimony and some other metals from their ores.
And here's the key to the mill; go over and pick out whatever you will want in the way of an assaying outfit, and have that taken down with the rest.
On their arrival at Ophir, Mr. Underwood gave directions to have the assaying outfit taken to the rooms in the rear of his own offices, after which he and Darrell, with the remaining teams, proceeded in the direction of The Pines.
There must be plenty of assaying to be done in Ophir; why couldn't I temporarily open an office there?
The first volume will be a Manual on the Art of Assaying Precious Metals, and will be found valuable not only to the amateur, but to the assayer, metallurgist, chemist, and miner.
It will also bring about an increase in the sales of gold mining machinery, in gold miners' services, in assaying apparatus and labor.
I am assayingfor to know," answered Richard, huskily.
He hadn't had it assayed, because assaying is expensive and his supplies had cost more than he expected, but from the size of the button when he made his rough fire-tests, he knew that it ran high in silver.
But you bet your boots, after what Murray put over on me, I'm going to have some assaying done first.
The above list will hopefully give you a few useful examples demonstrating the appropriate usage of "assaying" in a variety of sentences. We hope that you will now be able to make sentences using this word.
