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gold processing » word processing (Expander búsqueda), willd processing (Expander búsqueda), olive processing (Expander búsqueda)
food » ford (Expander búsqueda), good (Expander búsqueda)
gold processing » word processing (Expander búsqueda), willd processing (Expander búsqueda), olive processing (Expander búsqueda)
food » ford (Expander búsqueda), good (Expander búsqueda)
1
artículo
The study sample is a refractory ore with an average grade of 19.31 g/TM provided by artisanal miners in the area and Yanga from the province of Canta, Lima. The mineralogy of the sample showed the presence of the following minerals: Gold, Chalcopyrite, covellite, chalcocite, sphalerite, pyrite, arsenopyrite, magnetite, hematite, goethite, rutile and bargains as photos indicate 1, 2, 3, 4, 5 and 6. The minerals found in larger volumes are bargains, Pyrite and Chalcopyrite in photo 6 are interlaced with gold particles chalcopyrite and pyrite, with the larger size of 17 microns of gold. In the first phase were carried out metallurgical testing with the hub centrifugal Knelson with 5 kg of sample, gravitational force of 60 G’s and water pressure of 3 psi, for different particle sizes as 52.25%, 60.66%, 67.13% and 74.64% - 200 mesh. The metallurgical balances indicate that the best test is...
2
artículo
The study sample is a refractory ore with an average grade of 19.31 g/TM provided by artisanal miners in the area and Yanga from the province of Canta, Lima. The mineralogy of the sample showed the presence of the following minerals: Gold, Chalcopyrite, covellite, chalcocite, sphalerite, pyrite, arsenopyrite, magnetite, hematite, goethite, rutile and bargains as photos indicate 1, 2, 3, 4, 5 and 6. The minerals found in larger volumes are bargains, Pyrite and Chalcopyrite in photo 6 are interlaced with gold particles chalcopyrite and pyrite, with the larger size of 17 microns of gold. In the first phase were carried out metallurgical testing with the hub centrifugal Knelson with 5 kg of sample, gravitational force of 60 G’s and water pressure of 3 psi, for different particle sizes as 52.25%, 60.66%, 67.13% and 74.64% - 200 mesh. The metallurgical balances indicate that the best test is...
3
artículo
Publicado 2020
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Mineragraphic studies allowed selecting the most suitable metallurgical process for optimal gold recovery, whose characterization both microscopic and macroscopic, allowed to undergo metallurgical tests on grinding, bottle cyanidation, centrifugal concentration, rougher flotation. As a result of these metallurgical tests on the base mineral, it allowed a 94.48% recovery in selective flotation with a blending of 36% Inkaracay vein and 64% Mina Sanca 2 vein.
4
artículo
Publicado 2024
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Currently, the food industry prioritizes the safety and quality of products, facing the challenge of maintaining sensory and nutritional integrity. To address this challenge, emerging non-thermal technologies are being explored that offer significant advantages in improving food quality over conventional technologies. This review aims to provide a comprehensive understanding of how these innovative technologies can transform the traditional food processing landscape as we know it. Non-thermal technologies have the potential to reduce energy consumption for food production, processing and packaging, compared to conventional thermal treatments. Furthermore, these technologies are particularly suitable for efficiently preserving bioactive compounds present in foods. This review describes the fundamental principles, applications, advantages and limitations of emerging technologies in food pr...
5
artículo
The need to develop and know methods for metallurgical treatment to process gold-bearing refractory minerals or hard to treat be- cause of carbon contents, tellurium, antimony, arsenic, carbonates and gold in solution solid sulfides, forces us to study the different methods of specific oxidation that should be applied in each mineral before to leach ore to reach high recoveries into precious metals Through Gravimetrically followed by cyanidation is obtained 94.74% of gold extract in the studied mineral.
6
artículo
The need to develop and know methods for metallurgical treatment to process gold-bearing refractory minerals or hard to treat be- cause of carbon contents, tellurium, antimony, arsenic, carbonates and gold in solution solid sulfides, forces us to study the different methods of specific oxidation that should be applied in each mineral before to leach ore to reach high recoveries into precious metals Through Gravimetrically followed by cyanidation is obtained 94.74% of gold extract in the studied mineral.
7
artículo
Publicado 2013
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Peru, which is a rich country in amount of ores and gold reserves, moreover; it has an attractive minerals sector to the world and of great importance in national economic development. However, in the metallurgy of gold ores, there are minerals called refractory or complex, where free fine gold is trapped or associated with sulfides (pyrite and arsenopyrite), this problem can be seen in the concentrator Tamboraque, which uses inefficient conventional metallurgical processes and of high operating costs. Hence, the present research found an alternative treatment for this type of complex mineral, consisting in a total flotation in a first stage and then a special differential flotation in the second stage, obtaining as a result a reduction of 76.82 % treatmentvolume, 78.31 % the consumption of reagents, 63.64 % presence of toxic reactive in general tailings, 55.85 % and 55.04...
8
artículo
This research aims to explore possible solutions to the problems presented in auriferous sulfide minerals , which have cianicidas by metals ( Gold companions ) can not be cyanide by high reagent consumption , which makes the process uneconomical . Also be a problem hitting the small domestic mining sites that have these features that can not be traded concentrates by high penalties imposed on them , then creating a social problem that should be taken into account. At the experimental level by testing and subsequent acid leach cyanidation seek to find a process that allows for adequate separation of gold copper and other species also have high technical and economic efficiency. Exploratory tests shown indicate the feasibility of finding the right process for the investigated mineral content has Gold , chalcopyrite , malachite , magnetite , hematite , goethite , covellite , chalcocite , an...
9
artículo
This research aims to explore possible solutions to the problems presented in auriferous sulfide minerals , which have cianicidas by metals ( Gold companions ) can not be cyanide by high reagent consumption , which makes the process uneconomical . Also be a problem hitting the small domestic mining sites that have these features that can not be traded concentrates by high penalties imposed on them , then creating a social problem that should be taken into account. At the experimental level by testing and subsequent acid leach cyanidation seek to find a process that allows for adequate separation of gold copper and other species also have high technical and economic efficiency. Exploratory tests shown indicate the feasibility of finding the right process for the investigated mineral content has Gold , chalcopyrite , malachite , magnetite , hematite , goethite , covellite , chalcocite , an...
10
tesis de maestría
El presente planeamiento estratégico se desarrolla en base a una empresa peruana privada, fundada en el año 2001 en Lima, tiene su centro de operaciones situado en Urbanización Huertos de Villena – Pachacamac (Lima Sur). Esta zona, que en su origen era una zona agropecuaria, se ha convertido en una zona industrial, dedicada principalmente a la fabricación y comercialización de alimentos balanceados para la industria de productos alimenticios para mascotas, con razón social: IFP S.A.C. Debido al creciente interés por una alimentación más saludable, nutritiva y la actual importancia de ayudar en el mantenimiento, cuidado y sostenibilidad de nuestras mascotas que son parte de nuestra familia, la empresa considera necesario implementar un plan estratégico para el período 2022-2024, donde uno de los principales objetivos de este plan es realizar un estudio de la industria de alim...
11
artículo
Publicado 2019
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In this paper, the technical, financial and legal feasibility of employing solar cogeneration for the food industry sector in Peru will be demonstrated. In consequence, we will quantify the electric and thermal energy obtained from a conventional Rankine cycle, with the particularity that the water used to condense the steam that exits the turbine will be employed for the required processes in the industrial plants, because of the high temperature obtained from the heat exchange with the steam. In addition, we will detail the processes in which the obtained energy will be employed, the quantity of devices to be used in this system, as well as the required specifications and the thermodynamic parameters, for a proper operation of the cogeneration system. Moreover, we will prove the legal feasibility of choosing a solar cogeneration system in the Peruvian legal system, and, in ...
12
artículo
Publicado 2003
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The sample that is the subject of study is a concentrate mainly of gold pyrite, product of the flotation process, from Empresa Minera Aurífera Calpa S.A. The characterization of the concentrate in the UNMSM polarized light microscope shows the presence of pyrite, sphalerite, chalcopyrite, electrum, marcasite, pyrrhotite, arsenopyrite, rutile and gangue. In the polished briquette corresponding to the +100 mesh, the presence of electrum has been observed. In the scanning electron microscope at the University, the presence of gold particles has been observed, even in pyrite; Said particles have sizes smaller than 200 nanometers, particles of gold and silver telluride intertwined with the electrum are also observed, whose particles have sizes smaller than 2 microns. These characteristics make the concentrate refractory to conventional treatment by the cyanidation process, which constitutes ...
13
artículo
Publicado 2003
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In the present work the revision, deduction and application of mathematical models in the quantification of the reaction kinetics of leaching processes of national sulphided minerals in chemical systems is made. The interaction between the mineral particles and the leaching solution is controlled by three possible mechanisms: by chemical reaction, by diffusion through the porous bed and by mass transfer; Each mechanism has its own mathematical modeling and parametric conditions. Experimental runs of leaching of gold and copper minerals are presented, in which their kinetic control equations of the most relevant variables are shown. Other empirical models are also shown that are used to elucidate the phenomenology of the leaching of mineral species, call chalcopyrite, sphalerite and galena.
14
artículo
Publicado 2003
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In the present work the revision, deduction and application of mathematical models in the quantification of the reaction kinetics of leaching processes of national sulphided minerals in chemical systems is made. The interaction between the mineral particles and the leaching solution is controlled by three possible mechanisms: by chemical reaction, by diffusion through the porous bed and by mass transfer; Each mechanism has its own mathematical modeling and parametric conditions. Experimental runs of leaching of gold and copper minerals are presented, in which their kinetic control equations of the most relevant variables are shown. Other empirical models are also shown that are used to elucidate the phenomenology of the leaching of mineral species, call chalcopyrite, sphalerite and galena.
15
artículo
Publicado 2002
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The work of leaching is developed in Fewer, Concentrated and Refractory Material (sulfured), in pulp or particles (agitation or piles) to ambient temperature in advance of maximum leaching of twelve hours, using like half lixiviante the acid sulfuric concentrate added salts oxidizers like the chlorides and nitrate of sodium or ammonium nitrate in different proportions. The results obtained regarding the recovery of gold reach 98%. If the gold is encapsulated in the quartz or auriferous sand, fluoride of sodium will be added (never to use the calcium, because it forms plaster that hinders the process) with the purpose of dissolving the quartz, it doesn’t dissolve neither complex form with the gold, it is also good to leave in you liberate noble metals as the titanium, platinum, talio, germanium, etc., those which then are recovered with the means lixiviante to which I have denominated S...
16
artículo
Publicado 2002
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The work of leaching is developed in Fewer, Concentrated and Refractory Material (sulfured), in pulp or particles (agitation or piles) to ambient temperature in advance of maximum leaching of twelve hours, using like half lixiviante the acid sulfuric concentrate added salts oxidizers like the chlorides and nitrate of sodium or ammonium nitrate in different proportions. The results obtained regarding the recovery of gold reach 98%. If the gold is encapsulated in the quartz or auriferous sand, fluoride of sodium will be added (never to use the calcium, because it forms plaster that hinders the process) with the purpose of dissolving the quartz, it doesn’t dissolve neither complex form with the gold, it is also good to leave in you liberate noble metals as the titanium, platinum, talio, germanium, etc., those which then are recovered with the means lixiviante to which I have denominated S...
17
documento de trabajo
In the case of food in favor of a child and teenager, states in Article 93 1, that while parents have both the duty to provide food for their children, this obligation, in case of absence or ignorance of the whereabouts of the parents , Could be assumed by older siblings, grandparents, collateral relatives up to the third degree or other responsible of the child and adolescent, in that sense the strictly stated articles indicate that the members of the family understood this as those people united by emerging legal links a intersex relationship, procreation and kinship according to the statement by Dr. Alex Placido 2 , - are to be owed each other, but in the Peruvian reality, food processing is not meeting Its aims that the rule has established since in practice we find many problems to be effective collection among these we have the bureaucracy, speed, form and way of enforcing complian...
18
artículo
Publicado 2010
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La pitajaya (Selenicereus megalanthus) es una fruta exótica que se encuentra en las selvas amazónicas, en el caso de Perú, se encuentra con mayor frecuencia en la selva alta. Se caracteriza por tener alto contenido de vitamina C y antioxidantes, lo que la hace apetecible de ser comercializada. Respecto a su procesamiento, este debe ser realizado cerca a la fuente de materias primas, para reducir los costos que se generen. Por el tipo de fruta, no cabe duda que ya procesado puede ser considerado una oportunidad para los pueblos amazónicos eleven su nivel de vida comercializando la pitajaya.
19
artículo
Publicado 2023
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The global consumption of ultra-processed foods (UPF) has experienced a rapid increase, particularly in developed urban environments. This trend has been associated with a rise in the prevalence of non-communicable diseases, suggesting potential risks to human health. Therefore, the study aimed to analyze trends and models of scientific production related to UPF and public health. To conduct the research, 139 documents were gathered from the Scopus database, using keywords such as "ultra-processed food" and "public health." Data were processed using VosViewer and Bibliometrix software to create cienciometric map networks. It is noteworthy that research has been growing from 2020 to 2023, with a total of 123 published articles. Brazil stands out as the country with the highest contribution, with Monteiro CA as the principal and most cited researcher. The two institutions with the highest ...
20
tesis de grado
Publicado 2024
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In Peru, chicken is one of the most consumed foods in all regions. Due to the constant increase in population,chicken production is increasing in the country. For this reason, a food company must improve its efficiency to satisfy more customers and reduce its costs per productive unit without reducing its quality. The research can be useful to canning companies as well as companies where their machines suffer from many failures within production due to a lack of maintenance planning and worker training. The model used is based on two methodologies: 5S and TPM. These methodologies reduced the total production time per batch by 8% and improved the utilization rate by 7 percentage points. The use of these tools helped reduce corrective maintenance time and standardize processes to avoid recurring equipment failures.
