Analysis of Influencing Factors of Maize Bulk Density The bulk density is the main indicator of corn consistency and is a concentrated reflection of the overall quality of corn. The impurities content, moisture content, porosity, shape, and uniformity of the corn will affect the size of the bulk density. After adding different proportions of impurities, the bulk density of corn was determined according to the methods specified by the national standard and the United States standard. It was found that the content of impurities in corn had a certain correlation with the bulk density. The determination of bulk density can be measured by a special corn bulkhead.
When measuring a single sample: pre-treat the sample according to the national standard method and determine the bulk density according to the national standard method. Alternatively, it can be measured directly with an electronic load cell or an electronic grain container. The most important feature of these instruments is the fast measurement time and accurate measurement results. Strongly recommend electronic grain weights. One sample of the same batch of corn was sampled, and a test sample conforming to the national standard was sieved out with a sieve of grains, and weighed in an amount of 1000 g. According to the relevant standard method, suitable corn impurities were prepared and added in proportions of 2%, 4%, 6%, 8%, 9%, 10%, 15%, 20%, and 30%, respectively, and mixed well with corn. According to the national standard method, the bulk density was measured 3 times, averaged, and the relationship between the BCFM content and the bulk density was plotted according to the average value. From the figure, it can be seen that when the BCFM content in the corn sample is less than 9%, the impurities are filled. Corn voids increase the bulk density of corn, so BCFM content is positively correlated with bulk density. When BCFM content in corn is greater than 9%, BCFM content is negatively correlated with bulk density.
When measuring multiple samples: pre-treat the sample according to the national standard method and determine the bulk density according to the national standard method. Three samples of the samples meeting the national standard were screened out with a grain sieve, each weighing 1 000 g. According to the relevant standard methods, suitable corn impurities are prepared and added in proportions of 2%, 4%, 6%, 8%, 9%, 10%, 15%, 20%, and 30%, respectively, and mixed with corn. Determine the bulk density according to the national standard method, take the average of the three samples, and plot the relationship between the BCFM content and the bulk density according to the average value. The graph shows that when the BCFM content in the corn sample is less than 9%, the impurities are filled. Corn voids increase the bulk density of corn. Within this range, the BCFM content is positively correlated with the bulk density. When the BCFM content in corn is greater than 9%, the BCFM content is negatively correlated with the bulk density.

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