Moisture content of seed cotton in relation to cleaning and ginning efficiency and lint quality by United States. Department of Agriculture. Production and Marketing Administration. Cotton Branch Download PDF EPUB FB2
EFFECT OF CLEANING SEED COTTON ON LINT QUALITY AND GINNING EFFICIENCY By FRANCIS L. GERDES Cotton Technologist and ARVID J. JOHNSON Assistant Cotton Technoloilist Bureau of Agricultural Economics and CHARLES A, BENNETT Senior Mechanical Engineer Bureau of Agricultural Engineering UNITED STATES DEPARTMENT OF AGRICULTURE,WASHINGTON, D.
Seed cotton, Moisture restoration, Moisture content, Spray, Lint, Quality. ith the introduction of cotton gin driers in the 's researchers noticed the reduction in fi‐ ber length quality, measured by the impact on yarn strength, when ginning at fiber moisture content (mc) below 5% (Gerdes et Cited by: 1.
Abstract It is generally accepted that harvesting and storing of seed cotton above a moisture content of 12% prior to ginning will compromise fiber quality. This advice stems from research conducted on harvesting seed cotton with the conventional basket and separate module building system, which produces large rectangular by: 2.
Excessively high moisture content can lead to deterioration of seed cotton quality and cause discolored lint and spoiled seed. However, low moisture content of seed cotton can lead to fiber breakage and an overall reduction in fiber quality during harvesting and Size: KB.
Moisture content of seed cotton in relation to cleaning and ginning efficiency and lint quality. USDA Production and Marketing Administration, Cotton Branch.
U.S. Gov. Print. Lint cleaning was introduced during the s and was developed specifically to remove foreign matter left in the lint after the seed cotton cleaning and ginning stages. Lint cleaners remove leaf par-ticles, grass, motes, stems, bark, seeds, fine trash, sand, and dust and can improve the grade of cotton.
Moisture content of seed cotton in relation to cleaning and ginning efficiency and lint quality. Washington, D.C.: USDA Production and Marketing Administration, Cotton Branch.
U.S. Gov. Print. Seed-cotton and lint moisture, and seed-cotton foreign-matter content were determined at the USDA-ARS Southwestern Cotton Ginning Research Laboratory in Mesilla Park, NM, by the standard oven-drying and pneumatic fractionator methods (Shepherd, ).
Lint samples were sent to the USDA-AMS Cotton Classing Office in Phoenix, AZ, for grading. seed cotton moisture, the lint is 6 to 7 per-cent. It is not uncommon, however, for lint to enter the gin system at less than 5 percent moisture content.
After the seed cotton in the module equi-librates with the environment, ginning oper-ations usually proceed more smoothly. Cotton is dried at gins in order to increase cleaning efficiency of.
Seed-cotton data 23 Cottonseed data 23 Lint-moisture content 24 Lint foreign-matter content 24 Lint-cleaner efficiency. 24 Classer's grade 24 Classeras staple length 24 Fiber maturity and fineness 25 Fiber-length distribution 26 Strength index 28 Nep count 28 Analysis of variance 28 Conclusions 29 Summary 30 Literature cited 32 Appendix 33 II.
Moisture content of seed cotton in relation to cleaning and ginning efficiency and lint quality. Washington, D.C.: USDA Production and Marketing Administration, Cotton Branch. Identify material properties that have a significant impact on fiber and seed quality during saw-ginning, and enable new or improved, commercial methods for measuring product moisture content and process mass flow rates during ginning.
3.A. Develop a mass flow rate sensor for seed cotton. 3.B. Improve seed cotton moisture content measurement. Tip #4: Ideal Cotton Moisture.
When measuring the moisture of cotton prior to ginning it, the ideal moisture content for cotton, according to information cited by the USDA, is between % and 8%.
When at this %MC, yarn processed from the cotton will be of a higher quality than it would be if the cotton was significantly lower in moisture content.
Even the best lint-slide humidifiers seldom bring over-dried cotton back up to about 7 percent moisture, which is generally desirable and expected by the mills. Every ginner should know that “the dryer is the best cleaner in the gin” when used correctly to dry seed cotton just enough for smooth ginning and effective cleaning, but not any more.
The cleanliness and quality of lint cotton cleaned with 10 combinations of seedcotton cleaning machines were compared with saw-type lint cleaners. The cleaning efficiency of one saw-type lint. Choosing the degree of gin cleaning is a compromise between fibre trash content and fibre quality.
Lint cleaners are much more effective in reducing the lint trash content than are seed cotton cleaners, but lint cleaners can also decrease fibre quality and reduce bale weight (turnout) by discarding some good fibre with the waste.
Historical data, mostly collected prior tohas shown that the drying of seed cotton often correlates with reduced lint quality, especially fiber length, and yarn strength.
This report discusses several studies conducted since which have examined in more detail the possibility of adding moisture to seed cotton. The emphasis was to improve cotton fiber properties, especially fiber. Goals / Objectives Our goal is to increase the profitability of the U.S.
cotton production system through new and improved cotton ginning equipment and processes resulting in enhanced market value and utility of ginned cotton lint in the global market.
We will focus on the following objectives: 1) Refine the design, operation, and management of existing cotton ginning machinery to increase. temperature, and lint density on cotton lint moisture transfer rates. This information will be used in conjunction with equilibrium moisture data to estimate the moisture content of harvested seed cotton during cotton harvesting and ginning.
ABSTRACT Moisture control during cotton (Gossypium hirsutum L.) harvesting, storage, and processing is. The reason for this is that ginners are particularly sensitive to wet, or overly moist seed-cotton, because it reduces ginning efficiency and results in lower classing grades.
Lint cleaning, the process after ginning, is the stage where most fibre breakage occurs. Moisture Content of Seed Cotton in Relation to Cleaning and Ginning Efficiency and Lint Quality.
USDA, Production, Marketing, Administration and Agricultural Research Service. 16pp. The amount of pollutants produced depends on the trash content of the seed cotton and the efficiency of the air cleaning. The centrepiece of the lint separation process is the gin stand.
However, there are seven process stages to a ginning line, as shown in the flowchart in Fig. Mathematical relationships for each seed cotton (Gossypium hirsutum) cleaning machine type used in the cotton ginning process were developed to predict changes in foreign matter content and moisture levels as a function of the condition of the cotton entering the machine, the environmental conditions and the operating parameters for each machine.
These relationships were. better cleaning efficiency, the marketing system has not provided an incentive to producers and ginners to concentrate on the problem of fiber length quality reduction due to ginning at low seed cotton mc. Many of the Suter-Webb, fibrograph, AFIS length measure-ments, and.
each percentage decrease in fiber moisture content while ginning, which resulted in an approximate % decrease in yarn break factor.
Cocke and Garner () ginned spindle-picked cotton with an average lint moisture content at the lint slide of % or %, which were achieved by controlling the drying. Two seed cotton cleaning. Cotton in the Doha Development Agenda; Chapter 2.
Impact of varieties and production practices on cotton quality. Varieties; Harvesting; Seed cotton storage and handling; Cotton ginning machinery; Seed cotton unloading; Feed control; Drying; Seed cotton cleaning; Gin stands; Roller-type gins; Lint cleaners; Moisture restoration; Packaging lint.
Moisture content has a significant impact on the processing efficiency and resulting quality of seed cotton, lint, cottonseed, and cotton byproducts. Seed cotton dryers are designed to reduce lint cotton moisture content to 5 to 8 percent to facilitate cleaning and fiber/seed separation. A high-pressure fan conveys seed cotton through the drying system to the first seed cotton cleaner, which loosens the cotton and removes fine particles of foreign matter (e.
g., leaf trash, sand, and dirt). cotton, lint-seed separation, trash removal from lint, and bale packaging. The quality of cotton after ginning is dependent on its initial quality as well as the type and degree of cleaning and drying that it receives during the ginning process.
The efficiency of the gin process is strongly influenced by the quantity of moisture and trash that. Physical Properties of Cotton. High-quality cotton lint can produce high-quality yarn, fabric, and therefore high-quality end-products. High-quality cotton lint has a number of physical properties, some of which are measurable, whereas others are not.
High-quality lint also implies the absence of certain harmful substances. A plurality of lint cotton quality measurements is made on lint cotton which is to be fed into the lint cleaning process in a cotton ginning system. The plurality of cotton quality measurements in the and thus the feed roller based on the cotton moisture content as shown in table 3.Ginning seed cotton The ginneries engaged in cotton seed are normally evaluated for their performance and seed quality.
The saw’gin is found effective for ginning seed cotton (Kapas) as compared to roller gins. The results revealed that about 1 to % seed gets damaged on saw gin and 7 to 8% lint remain with seed compared to 3 to %.Keywords.
Ginning, Lint cleaning, Lint quality, Simulation. C otton ginning consists of several processes. specifically designed to separate lint from seed and foreign matter from unginned seed cotton and ginned lint fiber.
These foreign matter removal processes, generally referred to as cleaning or extracting, occurs in two stages.