US3870465A — Process and device for the quantitative analysis …

Claim 1

Independent Claim 190 words

A method of controlling at least one operating parameter of a kiln adapted to subject a product containing free lime to a heat treatment, comprising the steps of: crushing the heat treated product issuing from the kiln to obtain a powderous substance; sampling at substantially regular time intervals successive amounts of said powderous substance, said sampling step being carried out by filling at said substantially regular intervals of time a calibrated receptacle with said powderous substance so as to obtain therein successive measured amounts of said substance; introducing said measured amounts successively into a container while simultaneously introducing into the latter measured amounts of a reagent adapted to allow the free lime content of said powderous substance to be determined by analysis; quantitatively analyzing the mixture of powderous substance and reagent thus obtained in said container so as to determine the free lime content of said powderous substance in said container; producing a signal representing the free lime content thus determined; and transmitting said signal to an appliance associated to said kiln and adapted to determine said at least one operating parameter of said kiln in response to said signal.

Claim 2

Independent Claim 190 words

A method of controlling at least one operating parameter of a kiln adapted to subject a product containing free lime to a heat treatment, comprising the steps of: crushing the heat treated product issuing from the kiln to obtain a powderous substance; sampling at substantially regular time intervals successive amounts of said powderous substance, said sampling step being carried out by filling at said substantially regular intervals of time a calibrated receptacle with said powderous substance so as to obtain therein successive measured amounts of said substance; introducing said measured amounts successively into a container while simultaneously introducing into the latter measured amounts of a reagent adapted to allow the free lime content of said powderous substance to be determined by analysis; quantitatively analyzing the mixture of powderous substance and reagent thus obtained in said container so as to determine the free lime content of said powderous substance in said container; producing a signal representing the free lime content thus determined; and transmitting said signal to an appliance associated to said kiln and adapted to determine said at least one operating parameter of said kiln in response to said signal.

Claim 3

Independent Claim 190 words

A METHOD OF CONTROLLING AT LEAST ONE OPERATING PARAMETER OF A KILN ADAPTED TO SUBJECT A PRODUCT CONTAINING FREE LIME TO A HEAT TREATMENT, COMPRISING THE STEPS OF: CRUSHING THE HEAT TREATED PRODUCT ISSUING FROM THE KILN TO OBTAIN A POWDEROUS SUBSTANCE; SAMPLING AT SUBSTANTIALLY REGULAR TIME INTERVALS SUCCESSIVE AMOUNTS OF SAID POWDEROUS SUBSTANCE, SAID SAMPLING STEP BEING CARRIED OUT BY FILLING AT SAID SUBSTANTIALLY REGULAR INTERVALS OF TIME A CALIBRATED RECEPTACLE WITH SAID POWDERS SUBSTANCE SO AS TO OBTAIN THEREIN SUCCESSIVE MEASURED AMOUNTS OF SAID SUBSTANCE; INTRODUCING SAID MEASURED AMOUNTS SUCCESSIVELY INTO A CONTAINER WHILE SIMULTANEOUSLY INTRODUCING INTO THE LATTER MEASURED AMOUNTS OF A REAGENT ADAPTED TO ALLOW THE FREE LIME CONTENT OF SAID POWDEROUS SUBSTANCE TO BE DETERMINED BY ANALYSIS; QUANTITATIVELY ANALYZING THE MIXTURE OF POWDEROUS SUBSTANCE AND REAGENT THUS OBTAINED IN SAID CONTAINER SO AS TO DETERMINE THE FREE LIME CONTENT OF SAID POWDEROUS SUBSTANCE IN SAID CONTAINER; PRODUCING A SIGNAL REPRESENTING THE FREE LIME CONTENT THUS DETERMINED; AND TRANSMITTING SAID SIGNAL TO AN APPLIANCE ASSOCIATED TO SAID KILN AND ADAPTED TO DETERMINE SAID AT LEAST ONE OPERATING PARAMETER OF SAID KILN IN RESPONSE TO SAID SIGNAL.

Claim 4

Independent Claim 190 words

A METHOD OF CONTROLLING AT LEAST ONE OPERATING PARAMETER OF A KILN ADAPTED TO SUBJECT A PRODUCT CONTAINING FREE LIME TO A HEAT TREATMENT, COMPRISING THE STEPS OF: CRUSHING THE HEAT TREATED PRODUCT ISSUING FROM THE KILN TO OBTAIN A POWDEROUS SUBSTANCE; SAMPLING AT SUBSTANTIALLY REGULAR TIME INTERVALS SUCCESSIVE AMOUNTS OF SAID POWDEROUS SUBSTANCE, SAID SAMPLING STEP BEING CARRIED OUT BY FILLING AT SAID SUBSTANTIALLY REGULAR INTERVALS OF TIME A CALIBRATED RECEPTACLE WITH SAID POWDERS SUBSTANCE SO AS TO OBTAIN THEREIN SUCCESSIVE MEASURED AMOUNTS OF SAID SUBSTANCE; INTRODUCING SAID MEASURED AMOUNTS SUCCESSIVELY INTO A CONTAINER WHILE SIMULTANEOUSLY INTRODUCING INTO THE LATTER MEASURED AMOUNTS OF A REAGENT ADAPTED TO ALLOW THE FREE LIME CONTENT OF SAID POWDEROUS SUBSTANCE TO BE DETERMINED BY ANALYSIS; QUANTITATIVELY ANALYZING THE MIXTURE OF POWDEROUS SUBSTANCE AND REAGENT THUS OBTAINED IN SAID CONTAINER SO AS TO DETERMINE THE FREE LIME CONTENT OF SAID POWDEROUS SUBSTANCE IN SAID CONTAINER; PRODUCING A SIGNAL REPRESENTING THE FREE LIME CONTENT THUS DETERMINED; AND TRANSMITTING SAID SIGNAL TO AN APPLIANCE ASSOCIATED TO SAID KILN AND ADAPTED TO DETERMINE SAID AT LEAST ONE OPERATING PARAMETER OF SAID KILN IN RESPONSE TO SAID SIGNAL.

Claim 5

Dependent Claim 19 words

The method of claim 1, wherein the successive measured amounts of powderous substance have a substantially uniform granulometric grading.

Claim 6

Dependent Claim 18 words

The method of claim 1, wherein the analysis is effected by a conductrimetric, potentiometric or pH-metric analyzing process.

Claim 7

Dependent Claim 27 words

The method of claim 1, wherein said receptacle is submitted to vibration, at least during the introduction of said successive amounts of powderous substance into said receptacle.

Claim 8

Dependent Claim 62 words

The method of claim 1, wherein each one of said successive amounts of powderous substance introduced into said calibrated receptacle is greater than the measured amount as determined by the calibration of said receptacle, and wherein the excess of powderous substance thus introduced into the receptacle is removed prior to introducing the measured amount of powdered substance thus obtained into said container.

Claim 9

Dependent Claim 48 words

The method of claim 1, wherein said receptacle is moved continuously along a substantially horizontal circular path comprising a filling location at which said powderous substance is introduced into said receptacle and a discharge station at which said powderous substance is transferred from said receptacle into said container.

Claim 10

Independent Claim 159 words

A device for controlling at least one operating parameter of a kiln adapted to subject a product containing free lime to a heat treatment the heat treated- product issuing from said kiln, said device comprising: means for crushing said product; a container; means for successively measuring at substantially regular intervals of time samples of the crushed heat-treated product issuing from said crushing means and for introducing said samples into said container; means for successively feeding at substantially regular intervals of time measured amounts of a reagent into said container; means for quantitatively analyzing within said container with the aid of said reagent the free lime content of the samples introduced into said container; means for sensing the result of the quantitative analysis and for producing a signal representing said free lime content; means for controlling said kiln operating parameter in response to said signal; and means for transmitting said signal from said signal producing means to said control means.

Claim 11

Independent Claim 159 words

A device for controlling at least one operating parameter of a kiln adapted to subject a product containing free lime to a heat treatment the heat treated- product issuing from said kiln, said device comprising: means for crushing said product; a container; means for successively measuring at substantially regular intervals of time samples of the crushed heat-treated product issuing from said crushing means and for introducing said samples into said container; means for successively feeding at substantially regular intervals of time measured amounts of a reagent into said container; means for quantitatively analyzing within said container with the aid of said reagent the free lime content of the samples introduced into said container; means for sensing the result of the quantitative analysis and for producing a signal representing said free lime content; means for controlling said kiln operating parameter in response to said signal; and means for transmitting said signal from said signal producing means to said control means.

Claim 12

Independent Claim 162 words

A device for controlling at least one operating parameter of a kiln adapted to subject a product containing free lime to a heat treatment, comprising: a crusher for crushing the heat-treated product, a calibrated receptacle movable between a filling location wherein it is filled with an amount of the crushed product and a discharging locating wherein said amount of product is introduced into a container; means for displacing at regular intervals of time said receptacle between said filling and discharging locations; means for introducing measured amounts of a reagent into said container; means for quantitatively analyzing the mixture of said crushed product and said reagent thus obtained in the container for determining the free lime content of said crushed product; means for producing a signal representing the free lime content determined by said analyzing means; means for controlling said kiln operating parameter in response to said signals; and means for transmitting the latter from said signal producing means to said control means.

Claim 13

Independent Claim 162 words

A device for controlling at least one operating parameter of a kiln adapted to subject a product containing free lime to a heat treatment, comprising: a crusher for crushing the heat-treated product, a calibrated receptacle movable between a filling location wherein it is filled with an amount of the crushed product and a discharging locating wherein said amount of product is introduced into a container; means for displacing at regular intervals of time said receptacle between said filling and discharging locations; means for introducing measured amounts of a reagent into said container; means for quantitatively analyzing the mixture of said crushed product and said reagent thus obtained in the container for determining the free lime content of said crushed product; means for producing a signal representing the free lime content determined by said analyzing means; means for controlling said kiln operating parameter in response to said signals; and means for transmitting the latter from said signal producing means to said control means.

Claim 14

Dependent Claim 154 words

The device of claim 8, wherein said receptacle has an open end and is mounted on a first portion of a substantially horizontal arm, a second portion of which is rotatably mounted on a substantially vertical motor-driven axis, said first and second arm portions being interconnected by a rotary joint adapted to bring selectively said first arm portion into a first position wherein the open end of the receptacle mounted therein is in an upright position with its open end directed upwardly, and into a second position wherein said receptacle is in an inverted position with its open end directed downwardly, means being provided for bringing said first arm portion into said first position while said arm moves said receptacle to said filling location and from the latter to said discharging location, and for bringing said first arm portion into said second position when said arm has moved said receptacle to said discharging location.

Claim 15

Dependent Claim 73 words

The device of claim 9, wherein said receptacle open end has a planar peripheral rim, and wherein scraper-like means are provided on the path of said receptacle along which the latter moves from said filling location to said discharging location, said scraper-like means being adapted to level off the surface of the product contained in the receptacle by scraping away any excess amount of said product which may protrude over said planar rim.

Claim 16

Dependent Claim 14 words

The device of claim 9, wherein vibrating means are provided for vibrating said receptacle.

Annuity Stage	Window Opens	Payment Deadline	Surcharge Period Until	Estimated Fee	Status
3.5 Years (Year 4)	1978-03-10	1978-09-09	1979-03-11	$2000.00	Window Closed / Lapsed
7.5 Years (Year 8)	1982-03-10	1982-09-09	1983-03-11	$3760.00	Window Closed / Lapsed
11.5 Years (Year 12)	1986-03-10	1986-09-09	1987-03-11	$7700.00	Window Closed / Lapsed

Process and device for the quantitative analysis of free lime

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