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GB/T 21017-2021: [Including 2023XG1] Technical specifications for maize drying
Status: Valid GB/T 21017: Evolution and historical versions
| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | Status | PDF |
| GB/T 21017-2021 | English | 199 |
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[Including 2023XG1] Technical specifications for maize drying
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GB/T 21017-2021
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| GB/T 21017-2007 | English | 239 |
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Technical specifications for maize drying
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GB/T 21017-2007
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PDF similar to GB/T 21017-2021
Basic data | Standard ID | GB/T 21017-2021 (GB/T21017-2021) | | Description (Translated English) | [Including 2023XG1] Technical specifications for maize drying | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | B91 | | Word Count Estimation | 10,145 | | Issuing agency(ies) | State Administration for Market Regulation, China National Standardization Administration | GB/T 21017-2021: [Including 2023XG1] Technical specifications for maize drying---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
Technical specifications for maize drying
ICS 65.060.99
CCSB91
National Standards of People's Republic of China
Replace GB/T 21017-2007
Technical specifications for corn drying
Released on 2021-05-21
2021-12-01 implementation
State Administration of Market Supervision and Administration
Issued by the National Standardization Management Committee
Foreword
This document is in accordance with the provisions of GB/T 1.1-2020 "Guidelines for Standardization Work Part 1.Structure and Drafting Rules of Standardization Documents"
Drafting.
This document replaces GB/T 21017-2007 "Technical Specifications for Corn Drying". Compared with GB/T 21017-2007, except for structural adjustments and
In addition to the editorial changes, the main technical differences are as follows.
---Increase the value of cracking rate, the value of broken rate, the value of fatty acid, the rate of seed germination, the value of obviously discolored grains, the unevenness of drying,
Terms and definitions of silty corn and hard corn (see 3.1, 3.2, 3.3, 3.4, 3.6, 3.7, 3.8, 3.9);
---The terms and definitions of crack rate and thermal damage have been deleted (see 3.1 and 3.3 of the.2007 edition);
---Adjusted the requirements for separate temporary storage, separate drying, and moisture unevenness of raw grain corn (see 4.1,.2007 edition 4.1);
---Adjusted the requirements of dryers and personnel (see 4.2.1, 4.2.2, 4.3.2, 4.2 and 4.3 of the.2007 edition);
---Adjusted the allowable heating temperature of corn (see Table 1, Table 1 of the.2007 edition);
---Adjusted the drying process (see 5.2.1, 5.2.2, 5.2 in the.2007 edition);
---Adjusted the drying process parameters (see Table 2, 5.3 of the.2007 edition);
---Added dryer flue gas emission requirements (see 5.4);
---Adjusted the drying quality index requirements (see Table 3, Table 3 of the.2007 edition);
---Inspection methods have been added (see Chapter 7);
---Adjusted the safety requirements (see Chapter 8, Chapter 6 of the.2007 edition).
Please note that some of the contents of this document may involve patents. The issuing agency of this document is not responsible for identifying patents.
This document was proposed by the State Bureau of Grain and Material Reserves.
This document is under the jurisdiction of the National Cereals and Oils Standardization Technical Committee (SAC/TC270).
Drafting organizations of this document. National Grain and Material Reserves Institute of Science, Jilin University, Liaoning Provincial Institute of Food Science, Zhengzhou COFCO
Research and Design Institute Co., Ltd., Jiuquan Okay Seed Machinery Co., Ltd., and China Grain Storage Research Institute Co., Ltd.
The main drafters of this document. Yin Jun, Zhang Zhongjie, Pan Jiujun, Wang Xiaomeng, Wu Zidan, Guo Daolin, Wu Wenfu, Li Jie, Yao Qu, Gao Shucheng,
Jia Jun and Liu Cuiping.
The previous versions of the documents replaced by this document are as follows.
---GB/T 21017-2007.
Technical specifications for corn drying
1 Scope
This document specifies corn drying terms and definitions, basic requirements, drying technical requirements, drying quality, inspection methods, safety requirements, etc.
content.
This document is applicable to different types of dryers with drying, slowing and cooling drying processes that use hot air as the medium for drying for different purposes
Corn kernels.
2 Normative references
The contents of the following documents constitute the indispensable clauses of this document through normative references in the text. Among them, dated quotations
Only the version corresponding to that date is applicable to this document; for undated reference documents, the latest version (including all amendments) is applicable to
This document.
GB 1353 corn
GB/T 3543.7 Crop Seed Inspection Regulations Other Inspection Items
GB/T 5262 General Rules for Testing Conditions of Agricultural Machinery
GB/T 5492 Grain and oil inspection Appraisal of color, odor and taste of grain and oilseeds
GB/T 5494 Grain and oil inspection, impurity and imperfect grain inspection of grain and oilseeds
GB/T 5498 Grain and oil inspection bulk density determination
GB/T 5520 Germination test for grain and oil inspection
GB 10396 General rules for safety signs and hazard graphics for agricultural and forestry tractors and machinery, lawn and garden power machinery
GB 13271 Boiler Air Pollutant Emission Standard
GB/T 14095 Technical Terminology for Agricultural Products Drying
GB/T 16714 continuous grain dryer
GB/T 20570-2015 Maize Storage Quality Judgment Rules
JB/T 13628 Circulating grain dryer
NY/T 370 Technical Specification for Quality Evaluation of Seed Dryer
3 Terms and definitions
The following terms and definitions defined in GB/T 14095 and GB 1353 apply to this document.
3.1
Increasevalueofcrackrate
The difference between the crack rate of the same batch of corn after drying and the sample before drying.
Note. Expressed in %.
3.2
Increase value of broken rate
The difference between the crushing rate of the same batch of corn after drying and the sample before drying.
Note. Expressed in %.
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