One other aspect of your site is the fact kaolin is considered a "drug" by Google. The sites you listed are all the power hitters... have lots of links, and reputable sources for qualifying as experts in the field, your site on the other hand is new from what I have observed, probably lacks the "in Bound Links" those sites have.
Then you have the single word you're targeting. In my opinion way too generic, "kaolin". Most folks, 60% or more use mobile voice search. I recommend you change your thought processes to account for these factors.
Not knowing your site, how it is presented and your target goals... let me suggest
Target KWs 3 to 5 words length... for example
kaolin skin care
Where does kaolin come from
Is kaolin safe to use
Is kaolin safe for skin
Secondly start posting your site to sites that will provide you a backlink, don't worry if they are "no follow". These are the safest links you can build. Place these links on sites where people that are interested in Kaolin visit. Take advantage of some directories as there are business directories people still use. It's free advertising too.
Just to be clear about this last piece of advice, I am talking about link building and the use of "no follow links".
I am not recommending you go out and buy links or create a bunch of "Do Follow". This will just trash your site. You build links for traffic not ranking. Traffic is where the money is !!!!