Another modification of this direct fall or shaft furnace is that in which the fall of the ore is checked by cross-bars or inclined plates placed across the shaft; this causes a longer oxidising exposure of the ore particles.
The precipitates are then collected, and after calcination in a special furnace for the purpose of oxidising the zinc, are smelted in the usual manner.
Provision is made for the introduction of separate supplies of air and gas into each cylinder; this enables the oxidising treatment to be controlled exactly as desired so as to effect the best results with all kinds of ore.
It is doubtful whether the bleaching power of sulphurous acid is due to it as an oxidising or a deoxidising agent; but the last is probably the case, with a like destruction of the compound constituting the colouring matter.
The bleaching power of light depends on its actinic or chemical rays, which, like chlorine, appear to act as an oxidising agent.
Forms ruby-red anhydrous prisms, very soluble in water, with formation of true chromic acid, and extensively manufactured for the purpose of oxidising and bleaching substances.
The former is employed in conjunction with sulphuric acid in the laboratory as an oxidising agent and in the manufactory for bleaching sperm oil.
From 6 to 8 tons of blister copper, in pigs, are melted in a furnace, and kept exposed for about 15 hours to the oxidising influence of the air.
Most of them depend on the oxidising effect of water when undergoing decomposition through the action of chlorine.
It follows that when the stomach is filled with fermenting food-stuffs, or the tissues are clogged with the products derived from such, the oxidising action of fruit will be correspondingly intense.
The sugar of commerce, on the contrary, is a dead food which has lost all association with vegetable protoplasm, with vitalised mineral salts and with oxidising ferments which would render it physiological.
If the bleaching effect is due to oxidation, the oxidising power of hypochlorites must be considered to be destroyed by the addition of ammonia.
The oxidising action of various mixtures of bleach and ammonia as measured by the rate of absorption of the available by the organic matter in the Ottawa River water is shown in Table XXV.
That the process was wholly an oxidising one, the work being done entirely by the oxygen set free from the hypochlorous acids in the presence of oxidizable matter.
From thermochemical considerations hypochlorous acid and chlorine water should be about equally active as oxidising agents.
The property of oxidising organic matter in water is also destroyed; this is well illustrated in Table II which shows the rate of absorption of chlorine and chloramine by the Ottawa River water.
The action of the ammonia on the oxidising power of bleach, as measured by the indigo test, was also found to be disproportionate to the amount added.
Again, solutions of chlorine gas and hypochlorites having the same oxidising activity, as determined by titration with thiosulphate after the addition of potassium iodide and acid, i.
The oxidising point of a pointed flame may be used for both kinds of glass.
If it loses its transparency and assumes a dull appearance, it must be moved further into the oxidising parts of the flame.
In working with lead glass, therefore, any reduction that occurs should be removed by transferring the glass to the oxidising flame at once.
If they should become blackened, however, the stain may be removed by re-heating in the oxidising flame (see p.
My own Herapath blow-pipe only gives a satisfactory oxidising brush flame when the jet is removed altogether from the end of the air-tube.
Lead glass should be heated for this purpose in the oxidising flame (pp.
For producing pointed flames the finer jet of the air-tube must be used, but when a highly oxidising flame of large size is required it must be removed.
Fletcher's Automaton with the large air jet gives a very liberal supply of air, and produces an excellent oxidising brush flame.
Mr. Madan has suggested the use of oxygen in place of air for producing the oxidising flame required for working lead glass, and to produce a flame of high temperature for softening tubes of hard, or combustion, glass.
If the spot of reduced metal produced in the first experiment be next brought into the oxidising flame, it also may gradually be removed.
Small tubes, and small areas on larger tubes of English glass, may be softened without reduction by means of the pointed oxidising flame; but it is not easy to heat any considerable area of glass sufficiently with a pointed flame.
Bring the tube gradually into the flame, and heat it with constant rotation, till the glass softens (for lead glass the oxidising flame must be used, as has been already explained).
In prolonged operations, in order that reduction may never go too far, hold the glass alternately in the hot reducing flame and in the oxidising flame.
Following up the idea that an explosion is a sudden combustion, he submitted a variety of mixtures of oxidising and combustible agents to the violent shock of a detonator of fulminate.
To obtain a total combustion of picric acid it is necessary to mix with it an oxidising agent, such as a nitrate, chlorate, &c.
The essential principle of them all is the admixture of an oxidising with a combustible agent at the time of, or just before, being required for use, the constituents of the mixture being very often non-explosive bodies.
In the oxidising processes which follow the alkaline treatments, the hypochlorites are still the staple agents.
The above series of researches grew out of the observations incidental to the use of the peroxide on anoxidising agent in investigating the hydrolysed furfuroids (102).
It is by the action upon aniline of certain oxidising agents, that the various colouring matters so well known as aniline dyes are obtained.
Openings provided at each end of the furnace permit the passage of the flame through it, and the revolution of the furnace turns over the powdered ore and brings it into more or less sustained contact with the oxidising flame.
This does not exert any action on the colouring matter, and hence this mordant is known as the non-oxidising mordant.
The operation must be so carried out that the non-oxidising green chrome mordant is developed on the fibre, and therefore the boiling must be thorough.
To this is then added 1 gallon of either hydrosulphite or bisulphite of soda to destroy the free oxygen it contains, and prevent it from oxidising the indigo solution, which is next added.
For this purpose either energetically reacting, oxidising reducing agents are applied.
The metal which acts in the body as the normal oxidising agent, is iron, hence the discovery of Ferrivine.
Ozone very rapidly decolorises indigo, litmus, and many other dyes by oxidising them.
The filings thus obtained are capable of burning directly in air (by oxidising or forming rust), especially when they hang (are attracted) on a magnet.
The oxidising property of chlorine is apparent in destroying the majority of organic tissues, and proves fatal to organisms.
It will be readily understood from this that nitre is frequently used in practical chemistry and the arts as an oxidising agent at high temperatures.
In this respect oxidising agents, or those compounds of oxygen which are employed in chemical and technical practice for transferring oxygen to other substances, are especially remarkable.
Hydrogen peroxide oxidises with particular energy substances containing hydrogen and capable of easily parting with it to oxidising substances.
It is also obtained by oxidising tannin with hydrogen peroxide, the other oxidation product being ellagic acid, and the two may then be separated as indicated above.
Again, by oxidising phenol with oxalic acid and vitriol, we get a colour dyeing silk orange, namely, Aurin, HO.
A substance having most of the properties of india rubber, prepared by oxidising boiled linseed oil, or any other oil that hardens on exposure to the atmosphere.
The upperOxidising Flame at [Greek: e] consists of the non-luminous tip of the flame.
Under the influence of oxidising agents, the product of fermentation undergoes a remarkable metamorphosis.
This artificial base is prepared by the action of bichloride of tin, mercurial salts, arsenic acid, and many other oxidising agents, upon aniline.
Olive-green powder rapidly oxidisingon exposure to air, and soluble in acids forming manganous salts.
The lower Oxidising Zone lies in the outer border of the fusing zone at [Greek: g], and is especially suitable for the oxidation of oxides dissolved in vitreous fluxes.
Being one of the most energetic oxidising agents known, it is not surprising that the claims of ozone as a disinfectant should have found many supporters.
Afterwards it was established that the same element possessed anoxidising property.
Its oxidising property affords a ready means for its detection, even when the sense of smell completely fails.
If this rapidly oxidising latex be mixed with normal latex, it would seem that the whole bulk of the latex is affected by this tendency to rapid oxidation.
It is observed that this condition under which any tree may yield rapidly oxidisinglatex is not a permanent one.
Müntz has shown that soil is capable of oxidising iodides to hypo-iodides and iodates, and bromides to hypo-bromides and bromates.
The second method in which these oxidising organisms act is by giving off oxygen.
It is possible that gypsum may act as an oxidising agent in the soil, just as iron in the ferric condition does.
The oxidisingpower of the micro-organisms of soil is not confined to the oxidation of ammonia or of organic matter.
Ammonia, however, can only be oxidised to nitric acid by means of certain powerful oxidising agents, such as ozone or hydrogen peroxide.
The alteration of the bronze he explains by the prolonged oxidising action of water containing carbonic acid.
Spennrath holds, in opposition to the opinion of Axel Krefting[11], that rust once formed cannot act as an oxidising agent, except by virtue of its power of condensing water and retaining it in its pores.
Guanidine may be formed by the action of oxidising agents, such as potassic chlorate and hydrochloric acid, on guanine; or by heating amide cyanide with ammonium chloride, and so forming guanidine chloride.
Gmelin has found samples contaminated with metallic bismuth--a metal which only slightly diminishes the fluidity of mercury; the impurity may be detected by shaking the mercury in air, and thus oxidising the bismuth.
Uranium oxide gives a green glass in the oxidising flame with borax or with sodic metaphosphate.
H{2}SO{4} and oxidising agents are the characteristic tests of an acid anilide.
Cobalt gives an intense blue colour to a bead of borax in the oxidising flame.
The quantitative estimation of phosphorus= is best carried out by oxidising it into phosphoric acid, and estimating as ammon.
In analysis, the copper in this compound is readily separated from the arsenic by first oxidising with nitric acid, and then adding to the nitric acid solution ammonia, until the blue colour remains undissolved.
The oxide of nickel gives, in the oxidising flame with borax, a yellowish-red glass, becoming paler as it cools; the addition of a potassium salt colours the bead blue.
Upon the surface of the filtrant are oxidising bacteria.
Now this method of simply oxidising alcohol to obtain acetic acid may be carried out chemically without any ferment.
As early as 1881 Professor Warington had observed that some of his cultures, though capable of changing nitrites into nitrates, had no power of oxidising ammonia.
The intensity of the colour reaction of the oxidising enzyme of the manganese plants was found to exceed that of the control plants, at least with regard to those leaves on the manganese plants which had turned a yellowish colour.
As late as 1910 the rôle of manganese in the functioning of the oxidising enzymes was again insisted on.
It is one of the most powerful oxidising agents known, and it doesn't even melt the rest of the steel surface.
As it happens, the Rockefeller Institute has just published a report of experiments with a new antidote for various poisons, which consists simply in a new method of enforced breathing and throwing off the poison by oxidising it in that way.
However carefully a tube is cleaned before being subjected to blowpipe operations, it will be fouled wherever there is an opening during the process of heating, unless the extreme tip only of an oxidising flame be employed.
Of course some control may be exercised by "soiling" with fireclay or using an oxidising flame; but the erratic behaviour of spelter in this respect is the greatest drawback to its use in apparatus construction.
The flames produced are the long narrow blow-pipe flames used in blow-pipe analysis, and arranged so as to consist mostly of oxidising flame.
The above list will hopefully give you a few useful examples demonstrating the appropriate usage of "oxidising" in a variety of sentences. We hope that you will now be able to make sentences using this word.
