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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
1

The leaching of toxic metals from chromite ore processing residue (COPR)

Deakin, David January 2002 (has links)
No description available.
2

The rate of oxidation of lime-sulphur solutions

Prince, Arthur L. 01 January 1920 (has links) (PDF)
Among the insecticides, lime- sulphur is one of growing importance. Already it has found extensive use as a spray on all kinds of fruit trees, shrubs and vines and is also largely employed as an animal dip for scab diseases, and for the extermination of lice in hen houses. It is especially adapted for the destruction of soft-bodied scale insects on fruit trees, such as the San Jose Scale.
3

Effects of lime application on fine-root development of Sitka spruce (Picea sitchesis (Bougard) carrie) trees grown on deep peat soils

Kakei, Mahdi January 1995 (has links)
No description available.
4

The influence of various common ions on the slaking of some South African limes

Potgieter, JH, Potgieter, SS, Strydom, CA, Gheevarhese, O 04 October 2003 (has links)
The rate of transformation from CaO to Ca(OH)2 during the slaking process is influenced by a number of factors. In this investigation the effects of common ions normally encountered in the slaking water were investigated. It was found that chloride and nitrate ions enhanced the slaking rate, while carbonate, sulphate and phosphate ions retarded the hydration of various limes used in the investigation. The increases and decreases in the degree of hydration correlate with the solubilities of the anions forming more soluble compounds than Ca(OH)2, as well as the solubility constants of the anions that formed less soluble compounds than the hydrated lime. The geological origin of the lime also influenced the slaking of the limes.
5

Modeling Dust Formation in Lime Kilns

Fardadi, Malahat 18 January 2012 (has links)
Dusting is one of the major problems in the operation of lime kilns because dust particles interfere with kiln operation and reduce its efficiency. A numerical model is developed to predict the rate of dust formation in rotary lime kilns. The model consists of four major components: 1) a 3D model for the kiln gas, solving fluid flow, heat transfer, and combustion in the gas region; 2) a 1D model for the kiln bed, solving for variation of the solids composition, including moisture content, along the kiln; 3) a 3D model to predict the motion of the solids in the bed, and to estimate the reaction rates; 4) a mathematical model to predict the rate of particle pickup from the bed. Additionally, motion of dust particles was modeled, for the first time, using Stochastic Separated Flow model (a Lagrangian approach). The developed model of particle tracking enables the user to predict distribution of dust particles in the gas section of the kiln. Different components of the model were validated using experimental data published in the literature. The developed model was used to simulate operation of a full-scale lime kiln at typical operating conditions, i.e. at different fuel and air flow-rates. Dusting signatures were also estimated for each setting to determine the effect each operating condition has on dusting. The results presented in this thesis indicate that dust formation is mainly affected by the kiln gas velocity. Effect of other operating conditions was found to be negligible within the ranges studied. The results presented here suggest that dust formation can be controlled by minimizing the input gas flow rate.
6

Modeling Dust Formation in Lime Kilns

Fardadi, Malahat 18 January 2012 (has links)
Dusting is one of the major problems in the operation of lime kilns because dust particles interfere with kiln operation and reduce its efficiency. A numerical model is developed to predict the rate of dust formation in rotary lime kilns. The model consists of four major components: 1) a 3D model for the kiln gas, solving fluid flow, heat transfer, and combustion in the gas region; 2) a 1D model for the kiln bed, solving for variation of the solids composition, including moisture content, along the kiln; 3) a 3D model to predict the motion of the solids in the bed, and to estimate the reaction rates; 4) a mathematical model to predict the rate of particle pickup from the bed. Additionally, motion of dust particles was modeled, for the first time, using Stochastic Separated Flow model (a Lagrangian approach). The developed model of particle tracking enables the user to predict distribution of dust particles in the gas section of the kiln. Different components of the model were validated using experimental data published in the literature. The developed model was used to simulate operation of a full-scale lime kiln at typical operating conditions, i.e. at different fuel and air flow-rates. Dusting signatures were also estimated for each setting to determine the effect each operating condition has on dusting. The results presented in this thesis indicate that dust formation is mainly affected by the kiln gas velocity. Effect of other operating conditions was found to be negligible within the ranges studied. The results presented here suggest that dust formation can be controlled by minimizing the input gas flow rate.
7

Effect of different preparation treatments of the flavor and ascorbic acid content of Mexican lime juice after frozen storage

Osman, Hussein Osman Ahmed 02 December 1950 (has links)
Graduation date: 1951
8

Limes, mortars, and cements

Emerson, Cyrus H.. January 1876 (has links) (PDF)
Thesis--University of Missouri, School of Mines and Metallurgy, 1876. / The entire thesis text is included in file. Holograph [Handwritten and illustrated in entirety by author]. Title from title screen of thesis/dissertation PDF file (viewed August 19, 2008)
9

Limes, mortars, and cements

Alexander, Curtis. January 1884 (has links) (PDF)
Thesis--University of Missouri, School of Mines and Metallurgy, 1884. / The entire thesis text is included in file. Holograph [Handwritten in entirety by author]. Title from title screen of thesis/dissertation PDF file (viewed October 27, 2008)
10

The physical action of lime on clay soils ...

Snyder, Robert Mifflin, January 1917 (has links)
Thesis (PH. D.)--Cornell University, 1918. / Bibliography: p. 25-35. Also available in digital form on the Internet Archive Web site.

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